yup a purebreed
Well something in limewire is broken, so you probably have to completely clean it out and set it up again. Off course not cleaning the files you downloaded
I would recommend completely uninstalling it and then delete any folders not containing downloaded files. This includes the options settings i.e. preference folder.
Then run CCleaner or similar program to clean registry
CCleaner - Home (I am not 100% sure it will do this as it's partially compatible with Vista) Delete everything associated with Limewire
Restart the computer before installing it again and then set up everything like it was before in the options.