Windows .jar Random crushes

[AppEx]

Launcher ver.: 1.2.7

MInecraft ver.: 1.5.2

Java ver.:7.0_21-b11

I started playing DW20 1.5 pack and the game crushes randomly every 10-20 mins,
The error in the console is EXCEPTION_ACCESS_VIOLATION

#
# A fatal error has been detected by the Java Runtime Environment:
#
# EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x000007fef0176220, pid=30940, tid=38832
#
# JRE version: 7.0_21-b11
# Java VM: Java HotSpot(TM) 64-Bit Server VM (23.21-b01 mixed mode windows-amd64 compressed oops)
# Problematic frame:
# C [OpenAL64.dll+0x6220] alSourcei+0x144
#
# Failed to write core dump. Minidumps are not enabled by default on client versions of Windows
#

Here is the .log file:
http://pastebin.com/kiWHcCpP

Help anyone?

 

[ben henderson]

im geting same problem can play for about five minutes then the game just cuts out and get the error pop up.....

 

[NEXUS2345]

Update your Java to update 45, a lot more stable and offers better support. That might help...