Thanks Daledoc1 for your help and info! I have performed the uninstall with the MBAM clean removal tool and reinstalled.I also added exclusions to my AV. This seems to have solved the problem.I can now right click an individual file and it scans that file,which I prefer! Thanks for your help and advice.Once again I have discovered a great site with helpful people,just like a couple of years ago with PC Help Forum who are similiar and very helpful if you have pc issues. http://www.pchelpforum.com/ Thanks again and loads of respect from me!!!!