I got 3 blackscreens in last games I played.
My java version is up to date.
Nick, is this enough information ?

#
# A fatal error has been detected by the Java Runtime Environment:
#
# EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x000000006d52358d, pid=2576, tid=6648
#
# JRE version: 6.0_17-b04
# Java VM: Java HotSpot(TM) 64-Bit Server VM (14.3-b01 mixed mode windows-amd64 )
# Problematic frame:
# C jsound.dll+0x1358d
#
# If you would like to submit a bug report, please visit:
# http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

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

Current thread (0x000000001418b800): JavaThread "Headspace mixer frame proc thread" daemon _thread_in_native, id=6648, stack(0x0000000017c80000,0x0000000017d80000)

a new one:

#
# A fatal error has been detected by the Java Runtime Environment:
#
# EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x000000006d52358d, pid=6932, tid=3548
#
# JRE version: 6.0_17-b04
# Java VM: Java HotSpot(TM) 64-Bit Server VM (14.3-b01 mixed mode windows-amd64 )
# Problematic frame:
# C jsound.dll+0x1358d
#
# If you would like to submit a bug report, please visit:
# http://java.sun.com/webapps/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

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

Current thread (0x0000000014184000): JavaThread "Headspace mixer frame proc thread" daemon _thread_in_native, id=3548, stack(0x000000001c510000,0x000000001c610000)

siginfo: ExceptionCode=0xc0000005, reading address 0x0000000000000000

Thanks - that's informative.