i stupidly went to jailbreakme.com and hit the dl button for the 1.1.1 jailbreak. i have version 1.1.3 on my phone, and ever since then it's been acting strange; i can no longer check my voicemail it keeps prompting me for a password i never set. when i press the home button it automatcially goes to a password prompt, when i'm in text messaging it does the same. will restoring my phone to factory settings via itunes fix the problem? any input is greatly appreciated!!!