I decided it was time to buy some anti-spyware protection. I have been using Spybot, but as someone pointed out somewhere on a web page I trawled through, the bad guys aren't part-timers, and you need an equivalent level of defence.
Top10 Reviews lists Spy Sweeper as its gold medal choice, with CounterSpy taking the silver. My experience leaves me unimpressed with both. First of all, I thought I was getting a trial download of Spy Sweeper from Tucows. Straight away when it's installed however I get a message that my trial period is done and it's time to pay. There's a 30-day refund option so I wasn't bothered about that. But their payment system refused my credit card three times. I tried to find a contact link, and all I got were technical support options. Spy Sweeper got swept!
CounterSpy was even worse. First of all, the download was about 35MB. I had to look twice to be sure I was reading the number correctly, but there it was. So I download, and then I get the updates. That was about ten hours in total of computer time, because I'd used up all my fast broadband time - but the best was yet to come: I tried to open My Pictures and My Documents, and nothing happened. Then I started having trouble with Mozilla and Opera. After a couple of hours it reached a point where hardly anything was working! I uninstalled the program, and the screen was flooded with the stuff I'd been trying to access and a dozen or more error messages. Goodbye, CounterSpy. And while I'm at it...
Finally it looks as if I've got something good. I've set up AVG Anti-spyware, and it seems to be cruising along nicely. The download was about 6.5MB, and the updates took only a few minutes. I'd say at this point that I'll be sticking with it.