I think I might have found a bug in Tiger... I made my own colour profile a few days ago, but my mum still has the default one on. When you switch to her account and back to mine the default colour profile get updated on my account and when I go into preferences to change it back I can't (when I click on my profile I get the illegal operation sound and it doesn't change). Everything goes back to normal after a re-boot. But it's still annoying. Anyone else experienced this?