Hi Michel - This same thing is happening to me. It takes FOREVER when I make an update to a device - Upwards of 10 minutes per device.
I looked at my programs tab, per your advice and I didn't see anything running, or any nodes with 1011 etc.
Do you have any further advice? It literally has taken hours to program a 6 button Insteon switch and I'm not compete yet?
Thank You
-Perry