Right after I installed the Google+ app on my Droid2, I noticed some weird behaviour. Started with a Solitaire game where the screen would go black for a half a second each time a new ad loaded on the screen. In switching from one app to another, I'd get a momentary black screen. The back arrow wasn't always responsive. I uninstalled the Google+ app, and now the phone is acting normally. Having just allowed access to Google+ to the public, I guess all the bugs haven't been worked out.