I'm running OS X 10.8.5 on a mid 2011 MacBook Air. Lately I've noticed that when I attach or detach an external monitor, the relevant monitor colour profile is not actually used.
When I look in the preferences, the correct profile is always set, be it for the external monitor or for the build in screen.
The actual displayed colours however are of, which can be fixed by selecting a random other screen profile and then clicking back on the original and correct selected one. This obviously is a minor annoyance. Any ideas?