Have you had it too? An error message telling you NMIndexStoreSvr.exe must close? Probably you have had your computer graphics freezing up also? I kept having the same problem on a rebuilt computer when trying to watch BBC iPlayer.
Well, the good news is that you do not have a virus. The bad news is that you will most likely have to ditch one of your programmes altogether. The problem stems from Nero Essentials CD and DVD writing software. You most likely got it free in a bundle or with a disc drive you bought. You got what you paid for