Hi guys,
I just noticed a possible bug in the avast 5.0.594 GUI. at least in my case.
If I open the main interface, show details, I can see that virus def version is not up to date (ver 100709.0)…if I clik update, it tries to update, but it says that my vir def are already up to date…so, i don’t know…i tried with a rebbot, and repair function but nothing…any suggestion??
see screenshots
Start a manual update. (first option on pic#2)
Restart.
Solved…?
asyn
Do as Asyn says. 
Everything is ok now…thanks!!
Its increasing people having this kind of bug.
I have this almost every once a month.
Actually the fix of this is reboot the system then w8 for next update.
You’re welcome…!
asyn
A simple reboot or restart usually resolves the problem.