X-10 stuff

Bragging does not pay! Especially when one gets caught up in an inadvertant exaggeration as to years of use!! Since that interchange of emails, I have run across a rather strange problem with my X-10 setup and am - to date - stumped for a solution. What has happened is that the turn-on mode with my RS plug 'n power seems to be working as programmed (and as it always has) but the turn-off mode has ceased to function - at least during the times that I want it to. And when it quits functioning as programmed, it also blocks usage of the manual push button control. Let me cite some specifics. The p 'n p unit is programmed to turn on several lights at about 1930 hours, and then to turn them off at about 2330 and 2345 hours. I am forced to manually switch off the individual lamps using their own switches as the X-10 switch modules will not open. However, somewhere around noon of the following day I am able to press either p 'n p or manual control buttons to operate the X-10 switch modules. They then appear to remain functional until sometime later in the evening. I might also note that in an attempt to circumvent the problem, I changed house code to no avail. Anyone have any ideas that I might try to diagnose or cure? Thanks! - don