Have decided that not only do I not like the widescreen monitor but that it was responsible for giving me a blinding headache last night. Too wide an image for the peripheral vision and far, far too bright. Have reverted to full screen 4:3 aspect and knocked the brightness and contrast down to about 10% and it's much better. Of course, I've now got two bloody great black bars either side of the screen, but I'll just have to get used to that.
I'm really not that good with change in any form am I?