Whew... I'm so glad to see that I'm not the only CM11A user left! I purchased the ActiveHome kit years ago when it first came out (and when talking about COM ports made me feel young, not old!). I had abandoned my X10 projects a few years later, and nearly forgot about them entirely... until my sister recently moved into a place with a light-switch arrangement that didn't fit her lamp-centric decorating style. I remembered the old shoebox full of parts, and dug a few out.
I'll be setting her up sometime next week with some new lamp modules (that soft-start is a nice improvement), wireless transciever, and slim switch (also a nice looking improvement over the old "lumpy" wireless wall switches).
I figured while I had the parts out, though, I'd install ActiveHome on my PC and see if the CM11A still worked. Sure enough, it did. I even installed a few lamp modules in my living room, complete with macros and timers.
I know that at some point, I had the universal remote with X10 RF transmitter and a collection of motion sensors, but those may have been tossed years ago. Still, it's nice to have the old system running again. Ah, the memories!
Now, I need to look into some of the open-source software alternatives since this ActiveHome interface really was a clunker, huh?
Anyway, it was nice to find this site, and to see that this old ActiveHome forum still has users.