You are probably clicking on an alias that refers to the freeware version. Look for another alias on your desktop or in your dock, or go into the LimeWire folder and launch LimeWire from there. If you still see ads, completely uninstall LimeWire, delete all the icons and installers from your desktop, go back and get another installer, using your url, and reinstall.
as a LimeWire Pro customer, you can also get email support, from
service@limewire.com.
zbell