Question : Problem: LCD monitor randomly blanking and sometimes flickering lines

I have a dual monitor setup with two Syncmaster 2232bw rated for 1680x1050 @ 60hz connected to the DVI ports of my Nvidia 9500gt.

If i set both monitors two the highest res they are ok for a while then the first monitor begins blanking and sometimes flickering lines appears until I change the resolution down but then it starts blanking again.

ANy ideas?

Answer : Problem: LCD monitor randomly blanking and sometimes flickering lines

This may sound crazy but try swapping cables and see if the opposite screen is affected.