That module (which was new to me, actually) uses the same DB hooks that Devel::DProf uses. As a result it is likely to be just as unstable as Devel::DProf since it's actually the DB hooks that are usually at fault when a Devel::DProf seg-faults.

I second perrin's recommendation to try my Devel::DProf replacement, Devel::Profiler! ;)

-sam