I have just been suffering this too, but with apache version 2.0.54-5sarge1. I've just configured the server for core dumps as suggested and the segfaults have stopped happening (as luck would have it). I haven't got my fcgid app working yet, though (400 errors) that might be user error.
-- Jon Dowland -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]