Sounds to me like something has your registry screwed up. It could be a faulty uninstall which left a rogue *.dll on your system, but I'd go with the registry first.
Check here.
This is why the user community, open source (even though I hate the term), and FREE software are keys.
The scumware guys can threaten the white hats who are trying to prevent the spread of this evil but they have little chance of suppressing them for long.
Commercial anti-spyware vendors, however, are a nice fat target for lawsuits. If a scumware maker wins any significant amount of money in a court case where he accuses a CA, Microsoft, or McAfee of wrongly blacklisting his 'utility,' there will be yet another rush of cases. Why make $0.00004 per click-through when you can sue for $30 million and pocket $2-3 of it after lawyer fees?
In other words, these guys start with no morals and go downhill from there.
Google search for Weatherbug and Jay Hoffman - this idiot surfs boards and news sites constantly to rebut claims that Weatherbug is not spyware. Pick your term Jay, if it makes you happy. Weatherbug is a horrible piece of software. If you must know the temperature, stick your head outside. If you want the forecase, turn on the Weather Channel on TV or the web.
Scumware makers must die!
I went to the link and doublclick tried to load!