On two different fedora 8 systems now, I have done a yum update, then the next time I started emacs, I've had it error off during initialization with a message about regular expression too big.
If I attempt to reproduce the problem, I find emacs starts up perfectly OK on the next try.
If I look in /var/log/yum.log, I don't see any updates that appear to be remotely related to emacs.
Anyone have a clue what the heck is going on here? I'm just curious. Since it fixes itself, it is no big deal I guess :-).