Yes I have. This driver was posted in the month of March. 2 drivers for the GMA and 2 BIOSs have been released since then. The month of June is around the corner so I hope new drivers/BIOSs will fix the problem.
I had the same problem before, so i explore on any possibility, and finally found a way that work.
Right click on your desktop, choose graphics properties...
go to display setting, set your refresh rate to 75 Hertz
and voila, appear 1440 x 900 on screen resolution option. (unfortunately, I haven't seen 1280x800 appear)
hope that could help.