I actually hate the 2.1 update. Sure it was nice to get pinch to zoom, but somehow they managed to fix the 3G-Edge fluctuation while utterly destroying 3G speeds.
Some days I love this phone and everything about it, other days I get really annoyed at Google for not being ready to support it. It's like their beta testers all lived in their little Mountain View bubble and didn't wander off the campus to see how this things works in real world situations.
I actually called Google's phone support this morning to discuss the issue and they have nothing useful to say and won't comment on any potential updates. According to the rep I spoke with, the post update-1 issues are isolated and they still need to collect data before an OTA will be issued.
So yeah, they are aware of it, but by no means would I expect another OTA update as soon as some have suggested.
Today I don't like this phone.