There is a greater “vibe” from most users this release is good.
That said there is at the present a new beta, v2014.9.0.2012, release.
It has more bug fixes. There aren’t very many bugs left to be fixed. v2014.9.0.2011 is quite stable.
I would, as many others have suggested that you do a clean install.

v2014.9.0.2012 beta can be found here http://forum.avast.com/index.php?topic=144768.msg1049924#msg1049924