You have a virus. Run your av and see if it can remove it.
If your av can't remove it, try d/loading
AVG free (click on link) update it and do a scan, then follow the prompts.
You can also try the fix here:
To fix the limewire keeps popping up / no taskmanager bug do the following.
More info here:
http://www.gnutellaforums.com/open-d...uld-aware.html