Colour Calibrated EoG Patch
I've now fixed the few small problems with my Little CMS patch for Eye Of Gnome, and it is now a lot faster and actually correct (previously it was adjusting most of the pixels hundreds of times...) If you want to give it a go, the patch is available here. It currently uses sRGB as the display profile and only creates profiles on the fly from embedded whitepoint and primary chomatic information, but will not read embeded ICC profiles. This is due to me scratching an itch, Canon EOS cameras don't embed a profile when they are using Adobe RGB.
If anyone out there has some feedback on this issue, feel free to edit the Colour Management page on the GNOME wiki.