Poll: is iOS 4 causing you grief?

To say our tip box has been inundated with reports of iOS 4 issues today would be something of an understatement. So far, those on staff seem to be running cool (with the exception of some slow down on our gold build downloads), but obviously you're a larger sample size with so far widely disparate reports. So tell us, is iOS 4 causing you grief? If so, how? (Note: if you're having multiple problems, pick what you'd consider most troublesome.) %Poll-48372%