[UPDATE] This information is related to developers only. If you have Java problems or want to know more about hs_err errror logs please refer to this more general post.
now david dice of sun came up with this script to simplify hs_err files, generated by java in case of crashes etc. it is written in perl and sounds quite promising:
The hs_err6.pl perl script parses an existing hs_err file and annotates it with additional information. In particular the script will decode the the rather cryptic “Error ID” string as well as making an attempt to decorate the module-relative offsets (e.g., [jvm.dll+0x1235]) found in native stack listings with more useful symbolic names.
i haven’t tried it yet, as i have no java application that crashes frequently. 
do you?
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Please read this blog’s post “Description of Java hs_err error log” at http://www.stottmeister.com/blog/2009/03/18/description-of-java-hs_err-error-log-files/ to find out more about hs_err files.
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[...] i have to correct my statement of how to understand java’s hs_err error files: the tool posted on davids blog was not coded by him but was used sun internally before. it’s still an useful tool, i guess. thanks for pointing out, dave! [...]
[...] wrote on how to understand hs_err files earlier on this blog. Let’s discuss the nature of hs_err files [...]