2.4.40.130 should be the most up to date version of the Spybot start center,mine is the same version,and looking in the Spybot folder,Start Center(sdwelcome.exe) says it was modified in July,which is roughly when I upgraded from 2.3 to 2.4.
To see if the scheduled updates are logged,I turned on task history in task scheduler for the Spybot tasks so I had a log of the task starting,etc.,then clicked Run twice,and they didn't appear to show in the Updates.logfile in Spybot,even after waiting 5 minutes.So I assume the updates don't show in the logfile,but I thought I checked that quite a while ago,and updates were logged,if I remembered correctly.So I'll have to watch the updates.logfile for a bit just to be sure.
Where the windows action center gave you the message that you hadn't had updates for 8 days,I assume you perhaps might not have been getting updates for that amount of time,unless there is some problem with scheduled updates being reported to the action center.Since I'm not 100% sure on all that,it might be best if you ask Spybot support about it as they can tell you about it better than I can.There's a form to fill out here:
http://www.safer-networking.org/support/
In the meantime,until you hear back from support,it would probably be best if you check for updates manually at least once a day,because there are usually antivirus updates every day,sometimes more than once.
