We've found a few pinhole leaks in copper pipe in a 60 year old house. I've read the threads about this problem and have a couple of other questions for the plumbing experts in the group:

1- I read that excess flux when soldering copper pipe has been implicated in causing pinhole leaks. How long does it take for a blob of acidic flux that has settled into the pipe to erode the copper and cause a leak? It it years...or is it just weeks to months?

2- I don't want to replumb just yet....is there any kind of sleeve or patch that can be applied over the copper pipe to stop the leak? Honestly, the leak is VERY slow...only a few drops per day. It seems to me that a rubber sleeve and a hose clamp would completely stop the leak.....any suggestions??

Thanks in advance for the advice!