Samsung Galaxy S II :: Don't Have Auto-rotate On, The Screen Keeps Rotating?

Firstly, The Voice talk section just keeps popping up, also a disclaimer from Samsung about Vlingo comes up quite a bit! Also even though I don't have auto rotate on, the screen keeps rotating around which is quite annoying! It freezes quite a bit as well. And the battery doesn't seem to charge as well. Also when I lock the screen and write in the pattern to open it, it has stoped working on occasion.Now the main difference I've noticced is that ther seem to be loadfs of apps afrer appearing on my phone which I never downloaded suchas:ChocoEUKorcom.samsung.app.playreadycom.samsung.InputEventAppcom.sec.android.app.Icdtestcom.sec.android.app.screencom.sec.android.app.smtsetEncryptAppAnd more and more!!!!! I have tried to delete or uninstall them but they won't let me! And I am worried because it says these can access all personal data such as services that cost me money as directly calling pone numbers, sending texts etc!