I got fire tranfer Plus before but disabled and deleted it right away because it was messing up msn somehow, dont remember exactly what it was doing.
anyways, you might have the plug in but you cant turn it off right? so you need to go into the folder it was installed and delete it. if you installed to the default path then its in: C:\Program Files\Messenger Plus! 3\Plugins\ I suggest you just get rid of everything there, just to be sure but dont delete it just move it onto a new folder on the desktop. if that doesnt fix the problem then it wasnt the plug-ins so just move them back. hope it helps