MacBook Pro : com.avast.deamon = 100% processor !

Hi,

I have a MacBook Pro Retina (Aout 2014) : i7 2.5Ghz /16 Go/ SSD 512 Go / FILEVAULT 2 /on Mac OS X Mavericks 10.9.5
From last week : my mac freeze when I use finder (file/folder, etc…)
I see this process : com.avast.deamon = 100% processor !

So : I disable File Agent, problem disappear.

===> Any have same problem ? How to resolve this ?

Thanks for Help.
Nico

http://img11.hostingpics.net/pics/234374c20141111122941.jpg

http://img11.hostingpics.net/pics/128916avast.jpg

Have you tried rebooting your Mac and update your virus definitions
(according to the screenshot, they are a week old)?