mm3n: So we wait... For it to reappear again.
skeletonbow I should indeed make a local hard copy for times like this, I'm not even sure why I haven't so far. It could be because of updates to Galaxy as you suggested. Let's hope they will all be fixed soon, though. :/
ALH: Guess they don't call it Fallout for nothing!:D
mm3n: Good one. xD
If you search through the last week or so of:
http://www.gog.com/forum/general/the_what_did_just_update_thread you can find some talk about Fallout disappearing and reappearing etc. so it's been going on for a few weeks. I've had it happen on and off myself, but it is random, sometimes showing up on the site and galaxy, sometimes it shows up just on the site or galaxy but not both and sometimes it doesn't show up at all. Separately from that, the game Original War sometimes disappears also or it's graphic image disappears, and sometimes one of the game shelves is missing a game and all the other games slide over to the left so there is a blank spot on the shelf, that seems random.
A little annoying but I'm not worried about it much as I know they'll fix it so it'd only be a problem for me if I wanted to play the missing games and couldn't get them - but I keep local backups of everything here anyway. :)