During a recent check Malwarebytes found and removed a couple of hijackers, but ever since my computer runs much slower, several programs report 'Not Responding' and I occasionally have to switch off as the PC freezes. I have run Malwarebytes, Spyware Doctor, SpyBot and several other anti malware/antivirus programs (AVG etc) and each reports my computer 'clean'. Any advice would be much appreciated as my PC is becoming unuseable :(
All programs are completely up to date.
Jeff