I have a Macbook that I was carrying in my backpack in one of those neoprene cases along with my water bottle (silly, I know...but it hasn't ever spilled prior to now!). I walked around for about 5-10 minutes at which point I noticed the bottom of my backpack was wet. I immediately opened it up and found that there was water on the bottom 2 inches of my case. I pulled my computer out and there was sort of a sheen of water on the front and back 2 inches on the side with all the ports. I then wiped it off. The screen came on when I opened it (it had not been off) but I turned it off and now I have it leaning so that if there is any water in the ports it will drain out. Does anyone think this is enough to cause water damage? If so, when will I know? How long do you think I should keep my computer turned off for? Thanks!