Avast 9 (Free) version 2014.9.0.2008 is not updating the virus definitions.
As of 2:45pm cst 11/17/13 it still shows latest definitions file as 131116-1.
The settings are for automatic update, with streaming updates enabled.
I tried manually several times, to no avail.
My pc is Win Vista.
My wife's pc is still running last Free version 8.
Her definitions file is 131117-1.
Her pc is Win 7.
(I tried updating manually several times using 2014.9.0.2007, before updating to the .2008 prog update.
As noted, still will not update definitions file to 13117-1 (or greater).