TSAdBot is spyware. Somebody installed something!!! But you may never find out what it was.
"TSAdBot, from Conducent Technologies (formerly TimeSink), is distributed with MANY (emphasis added) freeware and shareware programs, including the Windows version of the popular compression utility pkzip. It downloads advertisements from its home site, stores them on your computer, and displays them when an associated program is running. According to Conducent, tsadBot reports your operating system, your ISP's IP address, the id of the tsadBot- licensee program you're running, and the number of different ads you've been shown. It also indicates whether you have clicked on any of the ads. On installation, tsadBot may present an optional survey.If you answer the survey, your answers are conveyed along with the other information gathered by tsadBot. Conducent's privacy statement is available for viewing."
Found that at http://www.zdnet.com/zdhelp/stories/main/0,5594,2586415-2,00.html(Delete any spaces if you follow that URL).