I have a wireless router that is used for two computers. It's a good router and has never given us trouble until recently. On the router there's a POWER light and that's always green. There's a ETHERNET light and that's always green too. The problem is the lights for DSL and INTERNET keep turning red and then they turn back to green. I'll lose connection or signal or what ever it may be for a while and then regain it back. What could be my problem?