I booted my computer today to find that the resolution was out, I tried to change this in catalyst but the maximum I could use was "1600x1200". I've had this GPU for around 4 months with no issues at all.
Catalyst identifies the monitor as CRT, Analog at 1600x1200 resolution.
I tried reinstalling drivers and such but no change. I'll try another VGA cable when I'm home again but posting to see if I can get any good solutions.