Norton 2008 just stopped working

I went to use the scanner on my wife's computer and noticed that there was no Norton icon on the task bar. When I tried to run it from the start menu item, and hourglass flashed briefly but it will not start. I've also tried rebooting to no effect. I was able to run LiveUpdate manually, but that didn't help either.

 

The computer is an aging Dell 866 with XP SP2, which is used infrequently. The Norton 2008 is the 3-computer version. At one point, I allowed an automatic upgrade  to run, probably for the 2009 version, but that failed and I eventually got assistance in reinstalling 2008. I have not been prompted to upgrade that system since then.

 

Today, when I first got to the machine, there was a Windows Update "windows has resterted" notification, for updates applied on Monday 4/19.

 

Poking around in some of the Symantec folders within All Users\Application Data, I found the most recent changes to be as follows:

 

SyKnAppS folder, signature updated 4.23.2010 at 1:09pm. (today)

SPBBC folder - latest logs 2/23/2010, 3:51pm

SRTSP folder - latest logs 2/23/2010, 3:51pm

Shared\QBackup - latest folders were 2/22/2010, 11:22pm

LiveUpdate\Downloads - latest were 4/23/2010, 1:44pm (today)

 

There is also an AVError.log file from today, but that's binary so I can't tell what is in it.

 

And if it matters, a subscription renewal hit my card a few weeks ago ;-)

 

Any idea what the problem is, and how I should proceed?