Please follow these steps:
* Run this program: http://download.spamfighter.com/SLOW-PCfighter/Tools/SLOW-PCfighter_Remover.exe
* Wait until the program completes and asks if you want to sent the logs to the support team (choose "No").
* Restart your computer.
* Download and install the latest release of SLOW-PCfighter from here:
http://redir.download.spamfighter.com/slow-pcfighter/SLOW-PCfighter_2.2.22full.exe