After further searching my computer for parasites, I found SpyBlast on my computer. I found a website that gave me some instructions to remove the program (Open the Downloaded Program Files folder in the Windows folder, right-click the entry 'SBFullInst Control' and choose 'Remove'. Next, open the registry (click 'Start', choose 'Run' and enter 'regedit') and find the key HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run. Delete the 'SpyBlast' entry. Restart the computer and you should be able to delete the 'SpyBlast' folder inside Program Files.). I located the file listing in the Downloaded Program Files folder, yet every time I try to remove the program, it says that SpyBlast is being used by another program and it can't be removed. I think that SpyBlast may be the source of my system's problems. Which program is using SpyBlast?