I just upgraded to 4.5 2 days ago,everything working great until today.when browsing after 15 min my hour glass spins and the bb freezes so I decided to do a wipe.After everything came back up my favs icon was gone. I looked on here couldn't find anything,so I decided to call t mo tech support... after trouble shooting came up with nothing...they finally asked me what system I was running naturally I didn't tell them 4.5 but can they tell?cause after that he seemed like he didn't believe me.(maybe paranoia) I don't know if this would affect my warranty.I've only had the phone a mo.wouldn't want to lose warranty this soon.So after all that, I just was wondering has anyone had these issue after 4.5 if so any feed back would be appreciated.