I have the working solution for McAfee 8.0

Sorry for my english, im french, but i will tell you how wink
Right-Click on McAfee system tray icon, Consol VirusScan, on the new window, right-click on Acces protection (my mcafee is in french, but, its the first thing in the list), proprieties, and on the list in the middle of the window, you have 2 IRC block, delete it, apply, and its done smile

Thanks a lot for your help, thats help me to find the solution smile And sorry again for my english