Not tennis, PC malware
It's funny how things turn out. First I infected my PC, rather stupidly, with a mix of spyware and adware.
Then, like most folks I got caught up in the furore over the Sony DRM mess.
Well I was suspicious that my PC was not clean because I kept getting unexpected pop-ups whilst surfing, and eventually Zone Labs complained about sendeapi.exe.
It was because I had been reading Mark Russinovich's blog about the Sony mess that I decided to try the RootRevealer tool from sysinternals security utilities, and lo I had indeed a hidden infection. Thanks to the Forum I was able to clean it up using further advice by Calamity Jane here.