We all have them. Lately I've been getting lag. I usually do a scan about once a month, more if I need it.

Having had a sex starved teen I have had the chance to get lots of experience fixing various problems. After a while I made him fix his various problems, and kept him off my machine. Anyone who has a kid knows how well that works, they usually do what they want to, and deal with the consequences later.

Mine learned quite early I could access the cache through the house network. It saved me a lot of issues, though I don't think he was impressed.