Jenkins master node crashes often when viewing console logs of builds on slaves

Crashes often when viewing the build console log. Nothing in the error log. The jenkins.out.log contains:

# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x01bd80e3, pid=2888, tid=2196
#
# JRE version: 6.0_26-b03
# Java VM: Java HotSpot(TM) Client VM (20.1-b02 mixed mode windows-x86 )
# Problematic frame:
# J  org.kohsuke.stapler.jelly.groovy.GroovyFacet$1.dispatch(Lorg/kohsuke/stapler/RequestImpl;Lorg/kohsuke/stapler/ResponseImpl;Ljava/lang/Object;)Z
#
# An error report file with more information is saved as:
# C:\Windows\system32\hs_err_pid2888.log
#
# If you would like to submit a bug report, please visit:
#   http://java.sun.com/webapps/bugreport/crash.jsp
#

The hs_err_pid2888.log file does not exist.