Recently a friend of mine spilled water on my macbook when it was on. I let it dry for a day and now its working. However, according to Apple, the parts are no longer covered under the warranty and I have three years left. I'm fine using the computer as long as it works but if anything dies within the next three years I'll be totally on the hook for it, whereas Apple would normally just replace it. What is the likelihood that i'll experience problems with this machine in the future? Would it be safer to just have my friend replace the laptop?