Did a quick search, but nothing showed up that I wasn't aware of. 2.2 lagged my phone in a big way. Actually almost bricked it at first, but managed to do a factory reset, then reformatted the sd and it helped, but it is still laggy. The more I put on my sd, the slower it gets. I am currently backing up my sd and going to reformat again and see if it helps. Any other suggestions?