@pancake see the comment in the bugreport, i added gdb output there.
@pancake yep, haven't gone any further with gdb. unrar also segfaults on CH3SNAS/DNS323 when tring to uncompress large files.
7z segfault on ch3snas http://sourceforge.net/tracker/?func=detail&aid=2958682&group_id=111810&atid=660493
@oriolrius let me know when u arrive at the congress, im near hall 1 now.