Updated to .450 - simple and painless and so far no issues. Hopefully this resolves the relatively minor (yet annoying) lag issues.
Someone mentioned a different theme so I don't hit the area at the top of the screen that allows me to quickly access the network settings - that's probably a good idea.
The only other issue is the accidental hit of the hold or speakerphone when I'm using the phone. There's a phone lock app for that - but I'm a cheapskate.