Portrait jagged since patch 2.2

[silkfire]

Had this problem even in PTR patch 2.2; you see the edges of the head are pixeled/jagged, this is something that I never had before this patch. Nothing in the game is jagged, I use full antialiasing and everything is smooth. The GM said remove WTF, Cache and Interface folders but nothing helped.

Anyone suffering from same problem?

http://img239.imageshack.us/img239/7169/jaggedprtaq2.jpg