I am very puzzled about what is going on. I am running Fedora Core 7 using the Gnome Desktop. My display is a Samsung 226CW laptop. I've kept up to date with updates. I load my display profile vgct ga using xcalib. Colors don't really change but there is a small but obvious change in apparent gamma. When I fist started doing this, I had to reload the profile whenever the screen came back from the screensaver. Then it stopped happening, but now it has started to do the same thing. I've looked at all the recent updates, and I can't see what could be affecting this. The screensaver itself hasn't changed as far as I can tell. It is a minor annoyance, but if I could figure out why it keeps changing, it is possible I could control what happens. If anyone has any ideas, I would appreciate them.