I was having this problem too. Man oh man did it piss me off. I'd be in the middle of a disc duel and I'd lose controll of the client while that pop-up appeared.
It turns out MacAffee is blocking it.
Go to your virus scan console.
Right click on Access Protection
Click Properties
Highlight 8th from the top: "Prevent IRC communication"
Press "Edit" button
In the "Processes to Exclude" box add: Tribes2.exe
Comments
It turns out MacAffee is blocking it.
Go to your virus scan console.
Right click on Access Protection
Click Properties
Highlight 8th from the top: "Prevent IRC communication"
Press "Edit" button
In the "Processes to Exclude" box add: Tribes2.exe
Good Luck!
Fin