Launching SwingSet2 demo in jdk (demo/jfc/SwingSet2/SwingSet2.jar) it aborts with following output.

#
# An unexpected error has been detected by HotSpot Virtual Machine:
#
# SIGSEGV (0xb) at pc=0x0000002a958f7efa, pid=2951, tid=182894171904
#
# Java VM: Java HotSpot(TM) 64-Bit Server VM (1.6.0-ea-b46 mixed mode)
# Problematic frame:
# C [libc.so.6+0x76efa]
#
# An error report file with more information is saved as /tmp/hs_err_pid2951.log
#
# If you would like to submit a bug report, please visit:
# http://java.sun.com/webapps/bugreport/crash.jsp
#

Refer to attached hs_err_pid2951.log for further details.
With b44 and earlier builds, this is not reproduced.
Running 32bit java, this doesn't reproduce.

OS:Red Hat Enterprise Linux AS release 3 (Taroon Update 2)
uname:Linux 2.4.21-15.EL #1 Thu Apr 22 00:20:14 EDT 2004 x86_64
libc:glibc 2.3.2 NPTL 0.60
tested java bundles:
jdk-6_0-ea-bin-b46-linux-amd64-04_aug_2005.bin
jdk-6_0-ea-bin-b45-linux-amd64-28_jul_2005.bin