13 inch Macbook Pro External Display Issues (Fully up to date as of 28th of June)

Hi,
Basically I 've got a 13" MacBook Pro which I've been trying to get working with a 20" Samsung SyncMaster 2033HD Monitor using the Displayport/Thunderbolt Port to VGA adapter. I've applied every update even the newest ThunderBolt firmware update which was released today (28th of June) and nothing has got it working. As the photo shows the screen has artifacts at the bottom and the monitor knows it's putting out the incorrect resolution, despite the native resolution being selected
I'm tempted to try a DVI adapter but I don't really want to spend even more money without some indication of it being worth while.
So my questions are:
Is there some way to get the monitor working over VGA that has been discovered by other users?
Has anyone else had success using the DVI adapter where the VGA adapter has failed?
Thank You

Did you ever fix this. I had a macbook pro, and then upgraded to a new one at the beginning of this year with the
AMD Radeon HD 6750M. I have had nothing but trouble with the display adapter since. The monitor keeps blacking out suddenly, or flickering. I tried using a new display adapter, but the same trouble. I tried a different Samsung Syncmaster 193T display, but it also has the same problems. I tried a different Samsung crappy VGA monitor, and it wokrs okay. I think the thunder bolt adapter is more tempremental than a dedicated display port, and there is a bad contact.
Looking around for video drivers, but I doubt that will fix it. As a last resort I may get apple to check the port, but for all the hype, I think the adapter was a cost cutting measure, and the DVI was too bulky to accomodate. The quality is worse. I also have an old Powerbook G4, and the build quality on that was great. The product is not getting better, just promoting different stuff to keep the economy rolling in my view.

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