I used the pwnagetool jailbreak a few weeks back for 5.0.1 and my iPhone 4. All seemed to be fine when I noticed my iMessages weren't working. The toggle would switch on then off. No workie. Then I noticed after a little research that my Facetime settings were missing all together. No facetime toggle under Settings>Phone. Also nothing on the main settings screen. After mucking around I found that after installing SAM I could get the iMessages working. Also, after some testing I found that I could initiate and receive facetime calls so the functionality works, but I have no toggle to switch it on or off. Anyone else seeing this and know how to fix it?