See this Ubuntu bug report https://bugs.edge.launchpad.net/ubuntu/+source/ghostscript/+bug/15078 probably when a desktop application used Ghostscript to convert/display a PDF the crash happened. Version is what comes with Ubuntu Gutsy, Ghostscript SVN revision 8187.
This is the correct URL. https://bugs.launchpad.net/ubuntu/+source/ghostscript/+bug/150789 The original bug report doesn't provide sample files, but a crash that happens so early suggests build problems.
We would need sample files in order to proceed. If sample files are attached (or a repeatable case occurs), please re-open the bug.