Thanks. I switched to Mac three years ago and it's been a little too smooth! I tell people that buying a PC is like buying a car... and having to push it everywhere you go. Buying a Mac is like getting a chauffeur with the car.
I got pretty good about going into my PC and uninstalling and debugging and fixing files. I've since lost that ability since I switched to Mac. I have no clue how to do that now.
I mention it because I use my iMac to watch TV, movies and videos online. Sometimes I'll click on a deceptive link and it will instantly start downloading something like Graboid. I drag it to the Trash but how do I know if any little files have been left behind? I've also downloaded software and didn't like it so I've tried to uninstall it. At first I was told that All I need to do is drag it to the Trash and that took care of it. But some have uninstall options that I didn't know about. Also, sometimes when I downloaded a program, I never saw it again. I'd search and search but couldn't find it.
So, I guess the only problem I'm really having is with peace of mind. How do I go through my hard drive and check it for random, lost or useless files and programs that have been left behind? Since I switched to Mac, I've not learned to do that.
Some must exist because I recently had a problem with "Safari has quit unexpectedly." This is the only problem I've had with my Mac in three years. (Other than the resolved pixel issue.)
ETA: Is there a Mac version of a System Defrag I can run?