I noticed Norton trying to deal with the Vundo trojan three times and the second time the file was submitted, the third and final time it was removed. I was curious so I Googled the info and found some good advice on the Spybot site
Trojan.Vundo Already tried Vundo fix and continues to re-surface after removal - Safer Networking Forums

Downloaded the file, ran it several times and removed the remainder of the .dll's. I also d/l the latest version of Spybot which caught the Virtumondo adware 'trojan' which was also missed by up-to-date versions of Norton and Ad-Aware.
I have no idea which files contained the contamination, but I scan all my d/l's with Norton, which by the way is due to expire in 3 weeks, I am not sure if I should be shopping for an alternative?

Hopefully I have solved the problem and try installing LW again.