i have heard of some people have memory leaks after upgrading. Dunno if that's the problem here. I agree with above with deleting the other languages, which are not needed, and only take up memory. I know a rule of thumb to be on the safe side is to have at least around 15mbs free. I'm using 22.214.171.124, though it came on the BB. Also have a little over 24mbs free still.