Sometimes programs just won't open and the error -10802 (I think that is the number) shows up. I searched it on the mac website but nothing come up. Generally everything runs, but sometimes things just stop opening. When this happens programs that are already open will work (for example if word is open I can make a new document), but things are a lot slower, and particularly in firefox I noticed once when this happened that I was typing faster than the computer was able to show my text. When I restart my computer things return back to normal, but it usually happens again after a few days. What could be the reason behind this error? I recently removed all the music from my computer to make space, and ran an anti-virus program.
