I got a PF790, not new more than year old, usually run my resolution at 1280 by 1024 on my voodoo3 3000, had it on 60 hertz, never really thought much about it, until one day i put it higher. Every resolution and hertz setting except 60 hertz would make the lower right hand corner throb/blink/flash kinda deal like it was vibrating, never thought much about it, thought that my monitor couldn't handle anything other than 60hz until i was bored one day and found out the pf790 is suppose to go to 85 Hertz on 1280 by 1024. Now on my radeon LE, same thing happens, anyone know what it might be?