At some point, I may get involved with some big run down of my impressions of this big ole upgrade, but not now!

For now I just wanted to note: If you have installed any of the following: MailPriority, MailEnhancer or MailAppetizer (these would be in ~/Library/Mail/Bundles), uninstall them before running Mail.app under 10.4. I didn‘t have the same issues that some are having - unexpected quits and so on. For me, I just couldn’t send or save as draft!

Hope this helps someone!