Phone resetting and now apps missing
I had a bit of a search around and couldnt see the same problem/answers so here it is...
I have an unrooted I9100 / SGS2 on 3(uk) which I updated about a month ago through KIES to 4. 0. 4... Since then the phone has started freezing/crashing, then (usually) resetting itself anything upto 3 times a day (often less). Now it seems to have progressed into losing apps as well - I put in a 32GB class 10 sandisk card a few weeks ago, and transfered a few aps to that which all seemed to be fine, but suddenly those apps have greyed out in the menu and front screen... )The card itself seems ok - all my music/pics/videos are there...)
It also forgot my work wifi log in details, and wont display anything when i go to My Apps -> Installed in the Market (although scrolling across to All shows everything)
Does anyone have any idea what I can/should do? is it just a case of download those aps again and keep them on the phone? Should I do a factory reset? Root it? Stamp on it? Have a little cry?
Any help greatly appreciated!