After reading about the highly ranked Spy Doctor program I installed and purchased a license. Since then I have been having a lot of problems with the program. It causes a problem with boot-up on the first start of the day. The program won't fully load and the drive continues to run as if a scan were taking place. I have " Scan at Windows Startup" unchecked so no boot scan should take place, at least not one that takes over five minutes. Several times I've had to shut the computer down using the power button as the Shutdown/ Restart option does not work. Just today while simply changing between sections of Spy Doctor it locked up, showed Not Responding in the Task Manager and despite repeated attempts could not but shut down causing the need for another power switch shut down. I'm still dealing with their Tech support over the issue but at this point I'm about to uninstall Spy Doctor. I'll give them another chance to actually read my support ticket and try to answer the issues. I urge caution when considering installing the program. Another thing, after a full system scan Spy Doctor found nothing. Out of curiosity I ran SpyBot Search and Destroy and it found five tracking cookies. Today SpyBot found a tracking cookie even though Spy Doctor's "Cookie Guard" has been enabled since last scan. Anybody else have issues with SpyDoctor?