Carl, if we're talking about supply lines (incoming water, not drains), you should consider yourself lucky that applying a patch didn't start a new leak.
Pinholes in the midst of a galvanized pipe isn't uncommon, but take it as a warning. Often a galvanized pipe can look fine on the outside, and be supplying water, yet it might be so paper-thin that tapping it with a screwdriver can cause it to burst apart; when you look at the remains after cleaning up the flood, it's amazing that the pipe was holding pressure.
Carl, this might be a good time to begin preparing for replacement of those lines. Personally, copper is my choice, using "L" grade for large main runs or anywhere future access is going to be limited.