I recently installed McAfee VirusScan 2006 and Personal Firewall Plus 2006. Around this time, I discovered that my ATI video card’s control panel, Catalyst Control Center, stopped functioning: it wouldn’t even open.
It turns out that Catalyst Control Center needs access to the Internet, and Personal Firewall Plus 2006 was blocking it, apparently by default. Click the thumbnail on the right to see a screenshot of Personal Firewall, and notice that CLI.exe is marked “BLOCKED”.
To fix this, open the McAfee SecurityCenter, and click Personal Firewall Plus on the left side. Then click the link, “View the Internet Applications List”. If CLI.exe (with an ATI icon) is BLOCKED, then right-click on it, and choose “Allow Full Access”.
So, just why does Catalyst require access to the Internet? Who knows, but if you run ATI cards for a while like I have, you come to expect dumb things like this.