Tools to classify / uniquify core dumps or stack traces?

Hi all.  I've got an environment where I'm getting lots of core dumps
from various places and it's very tedious to go through them and
determine which ones are for unique problems, and which are essentially
duplicates (same bug causing the core dump).

I was thinking of throwing together some kind of Perl or Python script
that could compare and categorize stack traces, but I thought surely
someone must have done something like this before.

Anyone have any pointers or thoughts about something like this?