kisianik Hi,
First of all Igor isn’t a “forum guru” he is a member of Alwil Software, which creates avast! antivirus.
And second, about Kuang2 and Matyas being false positives, take a look at this page (FAQ Nr.2):
http://www.avast.com/eng/virus_detection_and.html#idt_1554
I hope this helps…