My Droid 2 seems to be getting slower and kind of .... jerky, for lack of a better term. Kind of like a PC when it doesn't have enough ram or whatever. Can the OS on a Droid have like, virus issues or something like that? Is there some way to restore it to a stock OS, or better yet, update the OS to make it work like it use to? It says my system version is 2.2 and that it is up to date. What else can I do to it?