...another $0.02 -
I'm running 2 SR731's (X10 Smart Repeaters) and I get NO false ARMs or DisARMs on my DS7000.
Sometimes on a disarm, I get 6 dings. - I have 4-KR10A's, and 2 SH624's. The only false arming or disarming I've received is when someone or something touches one of the buttons - (and btw, I think the buttons on the KR10A's are a tad too sensitive)
While testing different things, I repeatedly press buttons that send DisArm commands to my DS7000. Sometimes if I hold the disarm button down long enough, with my SR731'a I get 8, 10, 12 dings - but NEVER a re-arm.
Do you have ANY macros that arm the system? Do you have OnAlert installed? Do you have ANY security remotes installed into AHP? Have you EVER had them?
...and (I believe) it doesn't matter where you plug in the DS7000. It arms/disarms via RF only, not PLCs.