The Messenger Plus! that comes up on there, is as monster.rat said, the actual files, not spyware or adware.
Having Kazza on your computer is likely to cause you to get a lot of spyware as well. Fomr some of those things, it seems like you are getting them off websites you visit. None of the other things are realted to Messenger Plus! at all, or else they would have been reported before.
I think you should revise websites you have been on recently, and other things you have installed/modified before jumping to the conclusions that Messenger Plus! is the route of all your spyware/adware/virus problems.
-Tasha