I have four computers (2 notebooks and 2 desktops) all running anti-virus software which is frequently updated. Nevertheless, I was surprised to find the Sobig virus on two of the computers. Sobig and Blaster(LoveSans) have been two of the worst infestations ever.  More serious and more frequent infections are predicted.  Suggestions to everyone using and depending on computers for their business or personal use:

1. Install antivirus software such as Norton or McAfee.

2. Set the antivirus software to update virus definitions automatically.  Keep it up to date and renew your subscription annually.

3. Set the virus software to scan you entire disk(s) once a week overnight or when you don't need access.  You can "catch" a virus between updates and may not discover it sitting on your hard drive unless you scan the entire disk(this is what happend to me).

3. Set Windows to check for critical updates and then automatically download and install them routinely (at least once a week).  You can set this up under Control Panel - System - Automatic Updates - Settings.  The risk of a problem with an update is less than the risk of a virus infecting your computer.  Microsoft is considering making this feature mandatory in future software versions.

It is easy to ignore these simple tasks until you have a problem at which point you might have some serious damage and downtime.

Just a suggestion from someone who is very dependent on his computer.