Neither have I. What I did notice was that last night the Backup Assistant began around 3:30 AM, and it kept going. I figured it was getting ready for an upgrade? But it kept going, going in to cancel it did not work. Finally at 10:30 this morning I had to turn off/on the phone and shut off the Backup Assistant. When I synced it manually it only took seconds, then Market update let me know two apps had updates, which also acted up a bit (notification told me both successfully updates, but the Market showed they were still in progress). Alas, I have not yet seen hide nor hair of GB update.