I'v seen it in these threads too often that LW is responcible for viruses, spyware, screwing up peoples computers, I'v used both basic and pro version of LW without any problems so perhaps you complainers should be looking more at what your downloading and your own system settings.
I'v provided some links to software that might make you feel safer, but until you learn more about your computer then I doubt this very much.
Good proggies to check that no spyware is being installed with LW...
Spybot Search & Destroy Ad-Aware
Free Antivirus prog, special features disabled after 30 days...
Avast!