Why the avast windows (for instance, settings and about dialogs) do not have the Windows theme applied?
I’m using Royale theme without problems with all other applications… ???
Hi Tech 
Are you using the new avast! process execution prevention module?
http://forum.avast.com/index.php?topic=22184.0
Because I had the same issue when I installed it on my machine, after I removed it, everything went fine 
I’ve wrote about that in the topic ( http://forum.avast.com/index.php?topic=22184.0 ) but nobody answered 
Also have you noticed if you have sounds in the Resident Protection (Virus Found, VPS update…) ?
I haven’t noticed but the problem is the same 
Yes, I’m using the protection mode. :-\
Lost sounds too :‘( :’(
Same here …