I am using avast and this problem did not exists, also if you have any of this problem you can deselect from the AVAST general window in the "Real-Time Shields" go to the "Shield IM" messaging click to the "Expert Settings" and deselect the "mIRC".
(Avast! Home Edition 5.1.864)
Last edited by westor; 03/01/11 11:41 AM.