electric window problem 2002 Durango

About a week ago I noticed that the drivers side door lock button stopped working. A couple of days later the passengers side rear window stopped working (on both switches), today the passenger side front window stopped working (both switches). Any ideas?

Today I took off the drivers side control switch and took a good look at it, plugged it back in and everything works fine now. We'll see how long it lasts. I have a little over 52 k on it, I hope I don't start experiancing some of the other problems I've read about.