if you compile a program -p -auto-all with ghc and the name you give the exectuable contains iether a "." or a "-" (and possibly other things) it will core dump when executed (at least on sparc solaris), or so it seems, under 5.04.

has anyone else had this problem?

I've uncovered a profling bug that affects Sparc. 5.04.1 will have the fix. Cheers, Simon