I bought a Hyundai W240D (PVA version) about 2 weeks ago - link - and there is an issue where on mainly blueish/green colours there are bright green vertical lines at pretty much even spacings.
At first i thought it was due to the old graphics card i was using since it was such a big screen but now that i have a HD4870 i am pretty sure it is the monitor itself.
Whether there is a fix for this or it needs to be sent back to you for a replacement could a scan member please advise, thankyou.
Here there is only small lines but sometimes they are almost covering half the screen.
http://img383.imageshack.us/img383/3953/dsc01346wm6.jpg