Has anyone downloaded the new T-Mobile OS 4.2.1.107? Any problems? The only reason I ask is that the last time I downloaded my current OS which was then an upgrade, I had a number of problems including losing my Instant Messenger and a few other things. BB support through T-Mobile eventually got me back but it was several days and a lot of calls. Is there any advantage to the new OS? I guess I'm thinking, "if it's not broke, don't fix it!"
