Since I flashed the PR 1.3 update, the battery life of my N900 has improved, but the #1 reason I bought the phone - to use it for chat is messed up. The connectivity is beyond awful and I can disconnect a few times in a minute. Since this is the most important feature to me in this phone, can any of you tell me how to fix this, or if it's un-fixable, how do I downgrade to the previous update when I didn't have this problem?

Thanks so much.