When running with a debug vm on the customers machine we hit the following assert when using 1.3.1_10.

java_g -server ... -XX:+PrintCompilation ...

.....
1850 ! com.sapportals.config.ui.renderer.ConfigTableViewModel::getColumnAt (38 bytes)
1851 com.sapportals.htmlb.rendering.RenderUtil::encodeForJS (195 bytes)
1852 sun.io.ByteToCharISO8859_1::reset (11 bytes)
1853 com.inqmy.services.servlets_jsp.server.HttpServletRequestFacade::putMapEntry (67 bytes)
1854 ! com.sapportals.config.ui.renderer.ConfigTableViewModel::initFromContent (287 bytes)


#
# HotSpot Virtual Machine Error, assertion failure
# Please report this error at
# http://java.sun.com/cgi-bin/bugreport.cgi
#
# assert(is_loaded(), "must be loaded to have size")
#
# Error ID: e:\ws\1.3.1\hotspot\src\share\vm\ci\ciInstanceKlass.cpp, 121
#
# Problematic Thread: prio=5 tid=0x9dd400 nid=0xe24 runnable
#


stacktrace:
jvm_g!ciInstanceKlass::get_canonical_holder+0x4e
jvm_g!Compile::flatten_alias_type+0x32f
jvm_g!Compile::get_alias_index+0x15
jvm_g!insert_anti_dependences+0xaf
jvm_g!PhaseCFG::ScheduleLate+0x1d8
jvm_g!PhaseCFG::GlobalCodeMotion+0x19a
jvm_g!Compile::Code_Gen+0x137
jvm_g!Compile::Compile+0xa74
jvm_g!C2Compiler::compile_method+0x7f
jvm_g!CompileBroker::invoke_compiler_on_method+0x392
jvm_g!CompileBroker::compiler_thread_loop+0xb0
jvm_g!compiler_thread_entry+0x7e
....