Yeah, the restart definitely seems to have helped greatly.
The HTC Mail app is reporting 2.30 MB now, and is only being used for Exchange sync (3 days, 50K, no attachments)
I'd been considering root even before having these issues, mostly because I want a wifi access point for the infrequent times I travel outside an area with wifi I can already access free.
I haven't looked into the latest unRevoked yet, but I will certainly do so now. Thanks for the recommendation.
Also, I already have AppBrain, but I've only reinstalled the apps I use regularly (couple of games, Astro, Google skymap/googles/translate, etc.). I'm hesitant to reinstall iheartradio, however, because I'm 95% sure that it was preventing my phone from going into standby after closing it. I'm also wondering if having ATK installed for the first 2 weeks of ownership caused some issues that cascaded into the issues I had in the last 2-3 weeks.
The refreshed Inc. feels very much different, and much better, now.
I appreciate everyone who's contributed to this thread, and the rest of the forums. It has been quite helpful in solving minor issues and finding useful apps and time killers (aka games).