I have a problem that just surfaced. There is a 3 way switch that controls in-ceiling can lights. (Also on the breaker circuit but not controlled by switches are wall four outlets). The two light switches are both 3-way dimmers. They were installed last May. This week, the circuit breaker tripped. I could not re-set it so I unplugged everything and through process of elimination found that when I flip one of the light switches, it trips the breaker (the other light switch functions and the breaker doesn't trip as long as the "bad switch" if off). I replaced the 3 way with just a 3-way (not a dimmer) and the problem still exists. Any ideas on why it would do this after 9 months??