What was your previous version?
I'd suggest running utilities to check the system over. I did experience something similar if not identical. I can't remember the specific solution however. One way would be to uninstall your present version of LW. ie: Start menu>Programs>LW>Uninstall. But check your system over anyway. The ones I used were:
1.
Crap Cleaner (FREE), 2.
ad-ware (FREE), 3.
Spybot - Search & Destroy (FREE)
I also ran my system over with norton utilities.