I'm trying that. The initial charge after the update only lasted to 5 hours, so I turned it off and recharged. Turned it back on and the problem is the same. Will charge it again tonight after it runs out (currently down to 25% after 4 hours on standby) and hope for a miracle in the morning. Like another poster mentioned, I'm also having problems with sending and receiving texts. When I send, the message just hangs and eventually clears after 5 or 10 minutes, but the recipient gets 4 or 5 messages of the same text. And the phone is running much warmer than before, I can feel it in my pocket even though it's in a case. Probably related to this, everything seems to be running more slowly.

I'm utterly frustrated. None of these problems existed before the update, but I bought into the early reviews of faster performance etc. and didn't think twice about installing when I received the notification. Won't make that mistake again.