Samsung Galaxy S II :: Can't Receive Calls Or Lock Screen

Anyway, last night I set my alarm as I normally do before bed and this morning I over slept by a disgusting amount because somehow all of my apps had spontaneously crashed while I was asleep! The force close notification kept coming up for a number of different applications before I was forced to simply turn it off. When I turned it on again a few seconds later, most of my settings had been wiped along with much of the data kept on the actual phone memory. Some stuff was still there, like all my apps, my connections and passwords, but my home screen was defaulted, as were my message tone, ring tone and input settings. Also gone were any phone numbers I had stored on the phone itself as well as all of my inbox messages.

So, I went into the settings to put my screen lock back on because I noticed that had been reset, too. I did the normal routine, picked the pattern, confirmed it and so on. But after I put my phone down and locked the screen, when I picked it back up again and pressed the home key to activate the screen, it was just unlocked. I didn't have to input the unlock pattern. However, when I went back into the settings to make sure they were all okay, it made me enter the unlock pattern to get into it! How odd.