We're seeing lots of these using the new G1 garbage collector on 1.6.0_16:
# A fatal error has been detected by the Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0x00002b55ba46eeb4, pid=17580, tid=1090718016
#
# JRE version: 6.0_16-b01
# Java VM: Java HotSpot(TM) 64-Bit Server VM (14.2-b01 mixed mode linux-amd64 )
# Problematic frame:
# V [libjvm.so+0x57feb4]
#
Admittedly we're not on the very latest JDK, which at this time is _18. And wow, look at the release notes for Java SE 6 Update 18! I count 45 bug fixes tagged with G1... I guess they're serious when it's unlocked with "-XX:+UnlockExperimentalVMOption".
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