Upgraded an iphone 4 to IOS 5.0.1 and now the passcode does not work. The phone was configured with corporate email (exchange) requiring an 8 character pass-code. After the upgrade, late last night I was able to login to the phone. Used it for a few minutes and went to sleep. Woke up this morning & I was not able to login to it with the same passcode. Contacted apple and they want me to restore the phone. Has any one had a similar issue? The phone says its disabled ..and try to again in X number of minutes.