Carl:
Happened to many of us upgrading from RH* to FC1. Here are some related notes from the archive that might help out:
http://www.redhat.com/archives/fedora-list/2003-November/msg01298.html
A solution can be found here: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=109537
Clint
Woops! I mistakenly sent this reply to your follow-up and not your original question about Mozilla crashing on particular sites.
My apologies, all.
C
