Michel,
Great to hear from you. Well yesterday I found the problem with my network. I thought I would share it. At the same time I was having problems with home control network, I had a lot of static on my AM radios in the house. I wanted to see if something in the house was causing the static so I turned off each breaker in the house one by one. I found when I turned off the breaker to one of the bedrooms the static went away. It turns out a 6V power supply to my SlingBox was causing the static. I replaced the power supply and have now found my Insteon network is now working again. The power supply was putting out enough RF noise to create a serious problem with the Insteon network. It would be nice if there was a tool to see the qualilty of the Insteon network. Anyway maybe this will help others if they see a problem with their network. Take care.
Ken