how many days pass between messages "antivirus out-of-date"

Hello. Sorry for my poor english.

Yesterday (1/20) update AV to version 939 of 1/14/2008 with aprox. 25Mb.

When restart, the CIS tell me that AV is “out of date” and that must update.

What is the latest version of AV???

may be that by 6 day, updates are old???

Thanks

(:WAV)

As of Wednesday 1/21 the latest is 940. (23.1Mb)