leaky pipe

I have had two kegs of beer (I homebrew) sitting in my basement since 05.20.2009 (before my son was born) that I have been meaning to put in the kegerator. The only problem is I need to defrost the kegerator and clean the lines that the two empty kegs that are in there were using. Danika's mom was nice enough to stay over tonight and spend time with Danika and Graham so I could finally get the kegerator cleaned out. I was nearly done with everything when I noticed that I was being splashed with water. I looked up to determine the source, thinking something was messed up with the kegerator, and instead was surprised (and quite frustrated) to find that one our our copper hot water pipes is leaking.

The pipe was covered with foam insulation and the water was dripping from the end of the foam insulation, so I pulled it back and wiped the pipe dry to try to find where the water was coming from. There were a number of "ugly" solder joints that I thought one of which would be the culprit, but upon investigation it appears that the leak is coming from a place where it is just clean looking copper pipe. What happens to copper pipe that makes it start leaking? Anyhow, yet another thing on tomorrow's to do list, call a plumber. I am pretty sure it is something I could fix myself, but Danika requested we have someone else do it and keep the house a "construction free zone" for a while longer. At first I disagreed, but now that I have thought about it, it probably is best to have someone else come in and do it even if it is going to cost a bit more. My lack of sleep and over all stress level would not bode well for a "quick" and "effective" repair. Now to find a plumber...