Before you uninstalled LW/FW, were you having problems with the app(s) opening by itself all the time & refusing to stay closed? If that's the case, your computer might be infected & you should scan your computer with a good, updated AV program. Check out the thread below for links to online scans & more info about the virus.
* WARNING: Viruses on network you should be aware of! *

If that doesn't help, try AVG Free AV & see whether it finds any malware!
AVG free
Make sure to update AVG before you scan your computer.