Thanks a lot for the warning. The post was indeed cut. I was just saying that the issue was already mentioned in the forum, but on a post that dealt with other matters and, as a result, there was no reply.
When I play UFOAI on Ubuntu 7.10 every ten or so minutes it drops down from full screen mode to window mode and the, after some seconds, it goes back into full screen mode. I could not identify any pop-up in the Desktop or any other reason for the game to do so.
It is not a great problem, just a little bit annoying. Does anyone have any ideas?
P.S. - By the way, it is a great game. Congratulations and thanks to all those involved.