Hello everyone, I've got a Mac Pro with an ATIX1900-XT video card and a 23" ACD as my primary display. I've also got an Apple DVI-to-Video adapter to connect to my TV. Everything used to work perfectly until recently. Now, when I connect the adapter to the second DVI port, the screen on my primary display turns blue for a second (like it should), which I assume means that it has detected something in the 2nd DVI port. The porblem is that nothing happens after that. Clicking 'Detect Displays' in Displays Preferences doesn't do anything and the computer doesn't detect my TV. Would this be a problem with my graphics card, the adapter or the OS? Does anyone have any suggestions? Thanks in advance.