Well, my system started to shut down on Saturday and the report stated it was the lsass.exe file. When it wasn't shutting down and with the browser and e-mail closed, the system was sending and receiving data on its own accord! (I have dial up and could see the icon) my system also slowed right down....
Luckily I could stay connected long enough to go to the Symantec website and they gave me the easy to follow steps and I went to regedit and deleted avserve.exe and then yesterday ran the fix and it deleted the virus.
There was no indication on my NAV that it was switched off or there was anything wrong. And I had all the latest updates....