Eek....condensation inside the computer does not sound good to me.
allison.
I think it's because cold air from the storage space is trapped between the glass and the mac is then moved into a warm (supposedly) office or living room, causing the effect on the glass (in a limited area at that). It's not like there was water running down there or anything.
Interestingly I found this in an lcd tv manual :
"If a cold TV set is moved to a warm room, always allow any condensation
on the screen to evaporate before switching it on."
So I guess any prospective buyers might want to let their imacs acclimatize for an hour or so. Mine went right from storage in the shop, conveniently located 100m away, to a hot appartment presumably leaving no time for the colder air inside between glass and monitor to get replaced naturally with the hotter air of the room.