In the interests of feedback to the community... I just tried another anti-spyware software, this time CounterSpy. I ran a scan which took 20 mins & it found a tracking cookie. I chose to delete the cookie & CounterSpy sat there for 10 mins deleting the single cookie. I then closed CounterSpy in task manager while it was still trying to delete the cookie & then uninstalled CounterSpy pretty sharpish. For what it's worth, the software did update successfully though my ISA firewall, but on install it closed down Defender (not that I LIKE Defender) without warning. On uninstallation of CounterSpy, the software did not re-enable Defender.