BeatriceElysia: Anyone has this problem? I'm installing this game since 11 am cet and now is 3 pm cet.... What do do?
Depends on your internet connection speed and the GOG servers... I got "rural" internet (only 12 MBit/s if I'm lucky, most of the time it's 8-10...) and I usually download bigger games during the night...
Of course, if you have the installers downloaded, it's a lot faster to install from them, and then let Galaxy do its little import/check/update dance.
PS:
If you install through Galaxy you should see download speed and progress in the left bottom corner. Also note that by default Galaxy stops all downloads when you play a game (I guess not to hamper multiplayer). So if you played all the time this could explain, why you get no progress. That behaviour can be turned off in the options btw... Which I strongly recommend if you play single player games and want to install games at the same time in the background.