So I've been crashing left and right and lagging out constantly

The error I pulled out was this
#
# A fatal error has been detected by the Java Runtime Environment:
#
# EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x00000000c28748b0, pid=4716, tid=4956
#
# JRE version: 6.0_29-b11
# Java VM: Java HotSpot(TM) 64-Bit Server VM (20.4-b02 mixed mode windows-amd64 compressed oops)
# Problematic frame:
# C 0x00000000c28748b0
#
# If you would like to submit a bug report, please visit:
# http://java.sun.com/webapps/bugreport/crash.jsp
#

--------------- T H R E A D ---------------

Current thread (0x0000000006d5d800): JavaThread "Minecraft main thread" daemon [_thread_in_Java, id=4956, stack(0x000000000e050000,0x000000000e150000)]

siginfo: ExceptionCode=0xc0000005, ExceptionInformation=0x0000000000000008 0x00000000c28748b0

Registers:
RAX=0x00000000eac28990, RBX=0x00000000bc6587e0, RCX=0x00000000c0dd2228, RDX=0x00000000eac28990
RSP=0x000000000e14f550, RBP=0x00000000c2911aa0, RSI=0x0000000000000018, RDI=0x00000000c28748b0
R8 =0x00000000000000db, R9 =0x00000000000000db, R10=0x0000000000000005, R11=0x00000000c0dd2250
R12=0x0000000000000000, R13=0x000000000e14f628, R14=0x0000000000000000, R15=0x0000000006d5d800
RIP=0x00000000c28748b0, EFLAGS=0x0000000000010246

Top of Stack: (sp=0x000000000e14f550)
0x000000000e14f550: 00000000c2911ae0 eab9abf8eab9ac90
0x000000000e14f560: 0000000000000007 00000000c10951e0
0x000000000e14f570: 00000000eab9abe0 3e75c290c28748b0
0x000000000e14f580: 00000000eac28968 fffffff1bc841530
0x000000000e14f590: c049c40000000000 0000000000000000
0x000000000e14f5a0: 00000000eab9aa10 0000000000000247
0x000000000e14f5b0: c02e400000000000 0000000000000000
0x000000000e14f5c0: 00000000eac28990 0000000002769688
0x000000000e14f5d0: 00000000c0dd2228 fff8000000000000
0x000000000e14f5e0: fff8000000000000 fff8000000000000
0x000000000e14f5f0: 00000000eab9aa10 000000000e14f5f8
0x000000000e14f600: 00000000bbfa4530 000000000e14f658
0x000000000e14f610: 000000000e14f6a0 00000000025359c9
0x000000000e14f620: 00000000025359c9 fff8000000000000
0x000000000e14f630: 000000000e14f650 fff8000000000000
0x000000000e14f640: 000000000e14f6a0 fff8000000000000

Instructions: (pc=0x00000000c28748b0)
0x00000000c2874890: 00 00 00 00 00 00 00 00 05 2a e7 06 00 00 00 00
0x00000000c28748a0: d8 5c ad bb 00 00 00 00 00 00 00 00 00 00 00 00
0x00000000c28748b0: 05 00 00 00 00 00 00 00 f0 f8 f7 bb 0b 00 00 00
0x00000000c28748c0: ff ff ff 00 00 00 00 00 09 52 52 a5 5f f3 6e 3c


Register to memory mapping:

RAX=0x00000000eac28990 is an oop
ajs
- klass: 'ajs'
RBX=0x00000000bc6587e0 is an oop
{method}
- klass: {other class}
RCX=0x00000000c0dd2228 is an oop
aju
- klass: 'aju'
RDX=0x00000000eac28990 is an oop
ajs
- klass: 'ajs'
RSP=0x000000000e14f550 is pointing into the stack for thread: 0x0000000006d5d800
RBP=0x00000000c2911aa0 is an oop
ajn
- klass: 'ajn'
RSI=0x0000000000000018 is an unknown value
RDI=0x00000000c28748b0 is an oop
atd
- klass: 'atd'
R8 =0x00000000000000db is an unknown value
R9 =0x00000000000000db is an unknown value
R10=0x0000000000000005 is an unknown value
R11=0x00000000c0dd2250 is an oop
java.util.ArrayList
- klass: 'java/util/ArrayList'
R12=0x0000000000000000 is an unknown value
R13=0x000000000e14f628 is pointing into the stack for thread: 0x0000000006d5d800

anyone knows how to decode this?

Ok just was playing in the nether... and this happend

#
# A fatal error has been detected by the Java Runtime Environment:
#
# Internal Error (os_windows_x86.cpp:149), pid=4976, tid=5480
# guarantee(result == EXCEPTION_CONTINUE_EXECUTION) failed: Unexpected result from topLevelExceptionFilter
#
# JRE version: 6.0_29-b11
# Java VM: Java HotSpot(TM) 64-Bit Server VM (20.4-b02 mixed mode windows-amd64 compressed oops)
# If you would like to submit a bug report, please visit:
# http://java.sun.com/webapps/bugreport/crash.jsp
#

--------------- T H R E A D ---------------

Current thread (0x0000000007897000): JavaThread "Minecraft main thread" daemon [_thread_in_Java, id=5480, stack(0x000000000e0f0000,0x000000000e1f0000)]

Stack: [0x000000000e0f0000,0x000000000e1f0000]
[error occurred during error reporting (printing stack bounds), id 0xc0000005]


--------------- P R O C E S S ---------------

Java Threads: ( => current thread )
0x000000000789b800 JavaThread "Client write thread" daemon [_thread_blocked, id=3700, stack(0x000000001d1f0000,0x000000001d2f0000)]
0x000000000789a800 JavaThread "Client read thread" daemon [_thread_in_native, id=5068, stack(0x000000001cff0000,0x000000001d0f0000)]
0x000000000789a000 JavaThread "Thread-16" daemon [_thread_in_native, id=5300, stack(0x000000001c9b0000,0x000000001cab0000)]
0x0000000007898000 JavaThread "Thread-13" daemon [_thread_blocked, id=1496, stack(0x0000000011180000,0x0000000011280000)]
0x0000000007895000 JavaThread "Thread-12" daemon [_thread_blocked, id=5508, stack(0x000000000d3f0000,0x000000000d4f0000)]
=>0x0000000007897000 JavaThread "Minecraft main thread" daemon [_thread_in_Java, id=5480, stack(0x000000000e0f0000,0x000000000e1f0000)]
0x0000000007896800 JavaThread "Timer hack thread" daemon [_thread_blocked, id=3824, stack(0x000000000dff0000,0x000000000e0f0000)]
0x0000000007895800 JavaThread "Snooper Timer" daemon [_thread_blocked, id=2536, stack(0x000000000def0000,0x000000000dff0000)]
0x000000000c7c3800 JavaThread "TimerQueue" daemon [_thread_blocked, id=5432, stack(0x000000000d8f0000,0x000000000d9f0000)]
0x000000000721c800 JavaThread "D3D Screen Updater" daemon [_thread_blocked, id=5808, stack(0x000000000c320000,0x000000000c420000)]
0x00000000001ab000 JavaThread "DestroyJavaVM" [_thread_blocked, id=5316, stack(0x00000000023c0000,0x00000000024c0000)]
0x0000000006dbe800 JavaThread "AWT-EventQueue-0" [_thread_blocked, id=2392, stack(0x000000000af10000,0x000000000b010000)]
0x000000000671c000 JavaThread "AWT-Windows" daemon [_thread_in_native, id=3832, stack(0x0000000007e20000,0x0000000007f20000)]
0x000000000714f000 JavaThread "AWT-Shutdown" [_thread_blocked, id=5916, stack(0x0000000007d20000,0x0000000007e20000)]
0x000000000714e800 JavaThread "Java2D Disposer" daemon [_thread_blocked, id=1756, stack(0x0000000007c20000,0x0000000007d20000)]
0x00000000065d2000 JavaThread "Low Memory Detector" daemon [_thread_blocked, id=5228, stack(0x0000000006b60000,0x0000000006c60000)]
0x00000000065d1800 JavaThread "C2 CompilerThread1" daemon [_thread_blocked, id=5084, stack(0x0000000006a60000,0x0000000006b60000)]
0x00000000065b9800 JavaThread "C2 CompilerThread0" daemon [_thread_blocked, id=5848, stack(0x0000000006960000,0x0000000006a60000)]
0x00000000065b6800 JavaThread "Attach Listener" daemon [_thread_blocked, id=4144, stack(0x0000000006860000,0x0000000006960000)]
0x00000000065af000 JavaThread "Signal Dispatcher" daemon [_thread_blocked, id=5568, stack(0x0000000006760000,0x0000000006860000)]
0x0000000000526800 JavaThread "Finalizer" daemon [_thread_blocked, id=1212, stack(0x0000000006460000,0x0000000006560000)]
0x0000000000524800 JavaThread "Reference Handler" daemon [_thread_blocked, id=4604, stack(0x0000000006360000,0x0000000006460000)]

Other Threads:
0x000000000051b800 VMThread [stack: 0x0000000006260000,0x0000000006360000] [id=2776]
0x00000000065e5800 WatcherThread [stack: 0x0000000006c60000,0x0000000006d60000] [id=5144]

VM state:not at safepoint (normal execution)

VM Mutex/Monitor currently owned by a thread: None

Heap
PSYoungGen total 152896K, used 117750K [0x00000000eaab0000, 0x00000000f5550000, 0x0000000100000000)
eden space 131072K, 77% used [0x00000000eaab0000,0x00000000f0d636d8,0x00000000f2ab0000)
from space 21824K, 76% used [0x00000000f2ab0000,0x00000000f3afa4b8,0x00000000f4000000)
to space 21824K, 0% used [0x00000000f4000000,0x00000000f4000000,0x00000000f5550000)
PSOldGen total 349568K, used 32927K [0x00000000c0000000, 0x00000000d5560000, 0x00000000eaab0000)
object space 349568K, 9% used [0x00000000c0000000,0x00000000c2027d70,0x00000000d5560000)
PSPermGen total 60608K, used 28217K [0x00000000bae00000, 0x00000000be930000, 0x00000000c0000000)
object space 60608K, 46% used [0x00000000bae00000,0x00000000bc98e4f0,0x00000000be930000)

Code Cache [0x00000000024c0000, 0x00000000028d0000, 0x00000000054c0000)
total_blobs=1731 nmethods=1052 adapters=631 free_code_cache=46277184 largest_free_block=39936

Dynamic libraries:
0x0000000000400000 - 0x000000000042e000 C:\Program Files\Java\jre6\bin\javaw.exe
0x0000000077690000 - 0x0000000077839000 C:\Windows\SYSTEM32\ntdll.dll
0x0000000077570000 - 0x000000007768f000 C:\Windows\system32\kernel32.dll
0x000007fefcd30000 - 0x000007fefcd9c000 C:\Windows\system32\KERNELBASE.dll
0x000007fefce90000 - 0x000007fefcf6b000 C:\Windows\system32\ADVAPI32.dll
0x000007fefe860000 - 0x000007fefe8ff000 C:\Windows\system32\msvcrt.dll
0x000007fefcdf0000 - 0x000007fefce0f000 C:\Windows\SYSTEM32\sechost.dll
0x000007fefe900000 - 0x000007fefea2d000 C:\Windows\system32\RPCRT4.dll
0x0000000077470000 - 0x000000007756a000 C:\Windows\system32\USER32.dll
0x000007fefed60000 - 0x000007fefedc7000 C:\Windows\system32\GDI32.dll
0x000007fefea30000 - 0x000007fefea3e000 C:\Windows\system32\LPK.dll
0x000007fefeb80000 - 0x000007fefec49000 C:\Windows\system32\USP10.dll
0x000007fefeb00000 - 0x000007fefeb2e000 C:\Windows\system32\IMM32.DLL
0x000007fefec50000 - 0x000007fefed59000 C:\Windows\system32\MSCTF.dll
0x000000006d7f0000 - 0x000000006dfa8000 C:\Program Files\Java\jre6\bin\server\jvm.dll
0x000007fefa140000 - 0x000007fefa17b000 C:\Windows\system32\WINMM.dll
0x000000006d760000 - 0x000000006d76e000 C:\Program Files\Java\jre6\bin\verify.dll
0x000000006d3b0000 - 0x000000006d3d7000 C:\Program Files\Java\jre6\bin\java.dll
0x000000006d7b0000 - 0x000000006d7c2000 C:\Program Files\Java\jre6\bin\zip.dll
0x000000006d000000 - 0x000000006d1c3000 C:\Program Files\Java\jre6\bin\awt.dll
0x000007fef9cf0000 - 0x000007fef9d61000 C:\Windows\system32\WINSPOOL.DRV
0x000007fefd120000 - 0x000007fefd323000 C:\Windows\system32\ole32.dll
0x000007fefd890000 - 0x000007fefe618000 C:\Windows\system32\SHELL32.dll
0x000007fefce10000 - 0x000007fefce81000 C:\Windows\system32\SHLWAPI.dll
0x000007fefb560000 - 0x000007fefb754000 C:\Windows\WinSxS\amd64_microsoft.windows.common-controls_6595b64144ccf1df_6.0.7601.17514_none_fa396087175ac9ac\COMCTL32.dll
0x000007fefc580000 - 0x000007fefc598000 C:\Windows\system32\DWMAPI.DLL
0x000007fefb3d0000 - 0x000007fefb426000 C:\Windows\system32\uxtheme.dll
0x000007fefc900000 - 0x000007fefc90f000 C:\Windows\system32\CRYPTBASE.dll
0x000000006d2a0000 - 0x000000006d306000 C:\Program Files\Java\jre6\bin\fontmanager.dll
0x000007feedbb0000 - 0x000007feeddaf000 C:\Windows\system32\d3d9.dll
0x000007fefc600000 - 0x000007fefc60c000 C:\Windows\system32\VERSION.dll
0x000007fef3a40000 - 0x000007fef3a47000 C:\Windows\system32\d3d8thk.dll
0x000007feeb1c0000 - 0x000007feec2a9000 C:\Windows\system32\nvd3dumx.dll
0x000007fefa870000 - 0x000007fefa89c000 C:\Windows\system32\powrprof.dll
0x000007fefe620000 - 0x000007fefe7f7000 C:\Windows\system32\SETUPAPI.dll
0x000007fefcda0000 - 0x000007fefcdd6000 C:\Windows\system32\CFGMGR32.dll
0x000007fefd550000 - 0x000007fefd627000 C:\Windows\system32\OLEAUT32.dll
0x000007fefcd10000 - 0x000007fefcd2a000 C:\Windows\system32\DEVOBJ.dll
0x000000006d600000 - 0x000000006d617000 C:\Program Files\Java\jre6\bin\net.dll
0x000007fefeb30000 - 0x000007fefeb7d000 C:\Windows\system32\WS2_32.dll
0x000007fefcde0000 - 0x000007fefcde8000 C:\Windows\system32\NSI.dll
0x000007fefbf40000 - 0x000007fefbf95000 C:\Windows\system32\mswsock.dll
0x000007fefbf30000 - 0x000007fefbf37000 C:\Windows\System32\wship6.dll
0x000000006d620000 - 0x000000006d62b000 C:\Program Files\Java\jre6\bin\nio.dll
0x000007fefa950000 - 0x000007fefa965000 C:\Windows\system32\NLAapi.dll
0x000007fef39f0000 - 0x000007fef3a05000 C:\Windows\system32\napinsp.dll
0x000007fef39d0000 - 0x000007fef39e9000 C:\Windows\system32\pnrpnsp.dll
0x000007fefbdc0000 - 0x000007fefbe1b000 C:\Windows\system32\DNSAPI.dll
0x000007fef39c0000 - 0x000007fef39cb000 C:\Windows\System32\winrnr.dll
0x000007fef4ca0000 - 0x000007fef4ccf000 C:\Program Files\Common Files\Microsoft Shared\Windows Live\WLIDNSP.DLL
0x0000000077850000 - 0x0000000077857000 C:\Windows\system32\PSAPI.DLL
0x000007fef9c50000 - 0x000007fef9c77000 C:\Windows\system32\IPHLPAPI.DLL
0x000007fef9c40000 - 0x000007fef9c4b000 C:\Windows\system32\WINNSI.DLL
0x000007fefbfa0000 - 0x000007fefbfb7000 C:\Windows\system32\CRYPTSP.dll
0x000007fefbca0000 - 0x000007fefbce7000 C:\Windows\system32\rsaenh.dll
0x000007fefc750000 - 0x000007fefc76e000 C:\Windows\system32\USERENV.dll
0x000007fefca10000 - 0x000007fefca1f000 C:\Windows\system32\profapi.dll
0x000007fef9960000 - 0x000007fef99b3000 C:\Windows\System32\fwpuclnt.dll
0x000007fef46b0000 - 0x000007fef46b8000 C:\Windows\system32\rasadhlp.dll
0x000007fefd330000 - 0x000007fefd3c9000 C:\Windows\system32\CLBCatQ.DLL
0x000007fefc610000 - 0x000007fefc617000 C:\Windows\System32\wshtcpip.dll
0x0000000180000000 - 0x0000000180048000 C:\Users\Mark Valentine\AppData\Roaming\.minecraft\bin\natives\lwjgl64.dll
0x000007fef0060000 - 0x000007fef017d000 C:\Windows\system32\OPENGL32.dll
0x000007fef1b20000 - 0x000007fef1b4d000 C:\Windows\system32\GLU32.dll
0x000007feedf80000 - 0x000007feee071000 C:\Windows\system32\DDRAW.dll
0x000007fefa7f0000 - 0x000007fefa7f8000 C:\Windows\system32\DCIMAN32.dll
0x000000006d3f0000 - 0x000000006d3f7000 C:\Program Files\Java\jre6\bin\jawt.dll
0x000000005c4a0000 - 0x000000005dd31000 C:\Windows\system32\nvoglv64.DLL
0x000007fefcc30000 - 0x000007fefcc6a000 C:\Windows\system32\WINTRUST.dll
0x000007fefcac0000 - 0x000007fefcc2a000 C:\Windows\system32\CRYPT32.dll
0x000007fefcab0000 - 0x000007fefcabf000 C:\Windows\system32\MSASN1.dll
0x000007fefa720000 - 0x000007fefa74d000 C:\Windows\system32\ntmarta.dll
0x000007fefe800000 - 0x000007fefe852000 C:\Windows\system32\WLDAP32.dll
0x000007feeda80000 - 0x000007feedba2000 C:\Users\Mark Valentine\AppData\Roaming\.minecraft\bin\natives\OpenAL64.dll
0x000007feee0f0000 - 0x000007feee178000 C:\Windows\system32\dsound.dll
0x000007fefafd0000 - 0x000007fefb01b000 C:\Windows\System32\MMDevApi.dll
0x000007fefb430000 - 0x000007fefb55c000 C:\Windows\System32\PROPSYS.dll
0x000007fef2b60000 - 0x000007fef2b9b000 C:\Windows\system32\wdmaud.drv
0x0000000008720000 - 0x0000000008726000 C:\Windows\system32\ksuser.dll
0x000007fefbb60000 - 0x000007fefbb69000 C:\Windows\system32\AVRT.dll
0x000007fef1ac0000 - 0x000007fef1b0f000 C:\Windows\system32\AUDIOSES.DLL
0x000007fef35a0000 - 0x000007fef35aa000 C:\Windows\system32\msacm32.drv
0x000007fef3150000 - 0x000007fef3168000 C:\Windows\system32\MSACM32.dll
0x000007fef33f0000 - 0x000007fef33f9000 C:\Windows\system32\midimap.dll
0x000000006d540000 - 0x000000006d54a000 C:\Program Files\Java\jre6\bin\management.dll
0x000007fef9b50000 - 0x000007fef9b68000 C:\Windows\system32\dhcpcsvc.DLL

VM Arguments:
jvm_args: -Xms512m -Xmx1024m
java_command: C:\Users\Mark Valentine\Desktop\Minecraft.exe
Launcher Type: SUN_STANDARD

Environment Variables:
CLASSPATH=.;C:\Program Files (x86)\Java\jre6\lib\ext\QTJava.zip
PATH=C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common;C:\Program Files\Common Files\Microsoft Shared\Windows Live;C:\Program Files (x86)\Common Files\Microsoft Shared\Windows Live;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files (x86)\Windows Live\Shared;C:\Program Files (x86)\QuickTime\QTSystem\;C:\Program Files\Java\jre6\bin
USERNAME=Mark Valentine
OS=Windows_NT
PROCESSOR_IDENTIFIER=Intel64 Family 6 Model 23 Stepping 10, GenuineIntel



--------------- S Y S T E M ---------------

OS: Windows 7 , 64 bit Build 7601 Service Pack 1

CPU:total 4 (4 cores per cpu, 1 threads per core) family 6 model 23 stepping 10, cmov, cx8, fxsr, mmx, sse, sse2, sse3, ssse3, sse4.1

Memory: 4k page, physical 8387704k(4909928k free), swap 16773556k(12508940k free)

vm_info: Java HotSpot(TM) 64-Bit Server VM (20.4-b02) for windows-amd64 JRE (1.6.0_29-b11), built on Oct 3 2011 01:06:42 by "java_re" with MS VC++ 8.0 (VS2005)

time: Tue Aug 21 12:38:19 2012
elapsed time: 55 seconds