Everything works virtually 100%.
If you went through (as I have... many times) and tested my system....
you would find absolutely no problems. However... about a month ago: I tripped my (X10 DS7000) alarm when returning home, while my
garage door was closing and executing it's macro. I believe... this also happened at sunset (I use an X10 floodlight to detect sunset... and
run macros).
I think all the activity flooded my system, as
the garage door failed to report as closed.
This would most certainly disquality me for a 100% compliant system (unless we were to apply government standards). But any such glitch in my system is certainly very rare, and (thus far)
non-recurring.
I think in my case.... as my system has grown... I realize the odds of conflicting actions and macros increases. By being aware of the odds, I can apply some normal risk-management, and reduce or elimate the chances of an error.
In the fore-mentioned case...
the alarm triggered flawlessly... so I think
I can live with it.