Updates, not informed of failure...

Hello, Nod32 alerted me to-day of a problem. Incorrect username or password. But it took from 20 Nov. until to-day (25th) to inform me. It was not updating and being on automatic update I forget about it and let it do it's job. I think that is rather a long time and suggest it would be a good idea to inform me earlier. I don't know how it got changed, assuming it was. I was unable to check password, user-name correct. Done a scan and clean and all is well.
Maybe this is the problem from the threat log;

Time Module Object Name Threat Action User Information
19/11/2005 20:16:50 IMON archive hxxp://static.zangocash.com/cab/Zango/ie/bridge-c18.cab Win32/Adware.WinAd application Connection terminated My name\Puter name
19/11/2005 20:16:38 IMON archive hxxp://static.zangocash.com/cab/Zango/ie/bridge-c18.cab Win32/Adware.WinAd application Connection terminated My name\Puter name

I just remembered about this when writing the post above. Can I delete this or how should I handle it?
There was no indication of a problem until to-day when the bad user name and password alert appeared on screen.