I have the same problem.
One of the reasons i ditched Vista for Linux.
Linux exhibited the same problems for a while, until i fiddled around with the settings and got the refresh rate to 58 hertz. Then I never had that problem again.
Now I'm back on Vista since I want to stream video to my xbox360.. anyways.
As I was updated I noticed that there was an update for this monitor. And If you go into the display settings there is a setting for 58 Hertz. Let see if that solves the problem.
One of the reasons i ditched Vista for Linux.
Linux exhibited the same problems for a while, until i fiddled around with the settings and got the refresh rate to 58 hertz. Then I never had that problem again.
Now I'm back on Vista since I want to stream video to my xbox360.. anyways.
As I was updated I noticed that there was an update for this monitor. And If you go into the display settings there is a setting for 58 Hertz. Let see if that solves the problem.