iOS 4.1: any problems for you?

Okay, so we've given you about a day to download, install, and tear iOS 4.1 into microscopic shreds. What's the end result? We've been tipped on a handful of troublesome nuances in the update, ranging from unsolved proximity sensor woes to a sudden onslaught of voicemails -- and we're trying to get a feel for how widespread they all are. Care to chime in?

http://www.engadget.com/2010/09/09/i...blems-for-you/

I'm in the US and all I know is every now and then it will freeze up or more like if I have it tilted in landscape mode. If I go to another app after it freezes like that it won't tilt if I go back to the app it still is frozen only way I found to stop it is restart it which is a pain if you on the go somewhere. Anyone else have this trouble?