Go figure. I have two Macs; a Macbook Pro and an iMac. Both Intel CPU's, both with lots of hard drive and memory...life is good. However, I thought there was enough water under the bridge to give Safari 4 Beta a run and the reviews about speed and features over Safari 3 were extremely enticing. So given the Macbook Pro was the least critical of the two boxes, I upgraded to OSX 10.5.7 and made sure everything was peachy - it was. Next upgraded to Safari 4 Beta. Wow! It's fast, stable, has a really cool "Top Sites" tab (that comes up when I open a new tab, and many other features you can read about elsewhere.
Next was the iMac's turn.The OSX 10.5.7 upgrade went without a hitch, as did the Safari 4 install. However, unlike the Macbook, Mail on the iMac now crashes when fetching RSS feeds (I use Mail as my RSS aggregator) and the box says "Hey don't blame Apple, it was GrowlMail's fault!!"...and it is. I uninstalled the GrowlMail bundle from my ~/Library/Mail/Bundles directory, and everything is working again (except Growl notifying me of new mail). I can live with that.
So it's over to the Growl devs (who normally respond fairly quickly to this sort of thing) - FIX IT!! :-/