If the computer wakeup+macro is triggered by an X-10 code, it could be being generated by a neighbor. Two ways... If you have any RF transceivers they might be picking up a RF signal, or the X-10 signal might be just jumping from house to house along the electrical grid. If you have ACTIVEHOME software, you can use it to "find" other house codes in your area being used. "Tools", then "Find other housecodes". Click on "FIND". This will poll all house codes for status, and see if it gets a return.

I had to disable the RF control of my Sony SAT-A4 because no matter what code set I tried, SOMEONE in the neighborhood was using it, seeming ike a being a ghost using my home theater system.

Dave