I posted this in an unrelated thread (about battery life, with some other things) but I searched and didn't see anything so I thought maybe I would see if anyone else is experiencing this same weird issue. Since updating my iPhone 4 to iOS5, I've noticed the Calendar area in Notification Center "freaks out" whenever I open it. I don't know how to describe this, but basically what happens is say I have 3 or 4 reminders/alerts/whatever in the Calendar area. With Notification Center open, those 3-4 items "bounce" around within that area (so, item 1 moves to position 2, etc.). While this is happening, the little X at the top right of the area (which would close that area) is flickering which makes is appear and disappear rapidly. Also, while all this is happening, the performance of everything else drops dramatically. The scrolling stock tickers slows to a jerky crawl, and swiping up to close Notification Center is extremely slow and jittery. If I reopen Notification Center, same thing. Another thing that's extremely weird and annoying (and this JUST started this morning) is that the phone is vibrating every 2-5 minutes, as if I'm getting an alert/text message/etc. Trouble is, I'm not. There's no alerts, messages, missed calls, etc. Also, I don't even have vibrate turned on. (As I was typing this, is just vibrated again, and I verified the vibrate switch was not engaged). When I upgraded, I set it up as a new phone so everything was wiped. I am going to do this again, but I don't know what else to do. My battery is draining at 15%/hour, and i Have a feeling this may be related. Wanted to see if anyone else was having a similar issue (again, didn't see anything else specifically around the calendar in Notification Center). Thanks!