i haven't had any trouble and i don't keep cache
marconi , do you do regular software mantience on your computer ? defragging ? virus scan ? fire wall set up for your needs ? UPDATING THOSE PROGRAMS ? windows updates ? do you run any add blocking programs ? do you run a spyware detector/remover ?
sorry i didn't notice your question earlier . i have only updated and run the program using the full scan with the high boot scan boot option . i haven't used the used the repairs option . some of the repair options look ok to me , some i don't understand and some i wouldn't use . sorry i wasn't more help . there is a help tab that may help you , i haven't really checked it out though .