I cannot get rid of Spoton (is this irritant spyware or adware???)

I've tried Spybott search and destroy, Spy Sweeper and Aluria Spyware with no luck. Also found several recommendations on the web for manually deleting it, but the files/folders and registry entry's mentioned do not exist on my computer.

Any suggestions or help would be appreciated since the beast pops up avery 2 -3 web pages visited.