sorry for the missing info...
I am running at 1600x1200 with no themes running. I have the latest version of the nvidia drivers and have also tried one previous version to check but that showed exaclty the same errors. By glitches I mean a corrupted GUI - they happen all of the time and always in the same way. For example in the Nvidia NVMonitor app the size of the GUI is too small so half of the check boxes and readings run off the edge and cant be used. With AI suite, the GUI graphics for the buttons are all over the place and the icons for 'close, 'minimise' etc all run off the end of the title bar.