I want to strongly advice against anyone considering to upgrade to OS5.0. The os is very unstable and you can be sure that your apps will have problems - even after updating. First I couldn't even start the app. Rebooted the phone - same result. Updated all apps and then I could start but at least for Skype and Msn they kicks me out of the app every now and then. Unfortunately greedy Apple don't allow me to go back to the previous version without stealing all my purchased apps and data. If I want the apps back I have to purchase again they tell me!!!! The data - just forget about it. At this time DO NOT UPGRADE you iPhone until Apple has fixed a stable version and tested through the apps for compatibility with the new os.