Im just going to bump this old thread way back up.
So I contacted Relisys, the monitor manufacuterer after I had this problem back in May. They sent me a new monitor and the problem was solved until last week. I called them again and then sent me yet another monitor and the problem came back within about 5 hours of having the monitor on.
It's still the same problem, shadowed lines appearing down the left side of the monitor the same in the middle of the monitor aswell but the lines are curved slightly down the middle. All the text and images that appear have shadows to the right of them aswell.
Does it sound like a Graphic Card problem possibly?
I have tried this monitor on another PC and the problem was there. And I tried another Monitor on this PC and it was fine so it does seem to be the monitor.
Cheers.
