I tried an upgrade on my desktop this evening to Symantec Antivirus Corporate Edition version The computer went into a perpetual reboot loop.
The errors I’ve dug out of the log dont really match anything. It could be the Adaptic Easy CD creater bug mentioned in the Symantec tech support site, or it could a kernel memory issue. I managed to stop the reboot loop by going into safe mode and disabling some SAV services. I think tomorrow I’ll see if I can get a newer copy of nonav and remove all remnents of SAV from the system and try again.