Avast Malware PopUp

Can anyone explain me why I keep getting this PopUp:

http://shareimage.ro/images/uz4sdu2vtumq2lhk1gui_thumb.jpg

Thanks in advance

can you post it bigger so we can read ?

exploit tries to misuse security holes of Windows. If is your windows up-to-date then there are no risks. And no - you’re not infected.

if you use the forum searc function and searc for DCOM you will find plenty of info

here is one
http://forum.avast.com/index.php?topic=74037.0

http://www.grc.com/port_135.htm
http://accs-net.com/smallfish/dcom.htm

My Windows is Updated but I keep getting this popup!

Your firewall should catch these.

If you have XP go to this site and run the dcombobulator http://www.grc.com/freeware/dcom.htm

I have Windows 7 Home Premium x32 and still get this PopUp.

Your W7 FW should block it. Is it activated…?

No, should I Activate windows firewall? I use Avast Internet Security there is Firewall in it I think.

Is your AIS firewall activated? I prefer AIS firewall over Windows. I have Windows “off”, AIS “default (work/medium risk)”.

Yes it is and its on Medium Risk Zone.