01/23/14 did a system restore in Vista. Went back to 01/15 (date of last restore point). After restart get tray notice virus defs out-of-date (they weren't before this). Attempted def update - process stops after a few seconds and claims defs are up to date, yet window says 'Last successful update: 01/14/2014 (+ shows time). Then lists virus signature database version as #9329 (20140123) which is 01/23/2014. Even tried clearing the update cache. Restart PC but Tray notice still says defs are out of date. Subscription good until September, 2014. WTF?