I usually Remove the rules completely (and a few others) when I'm not using it - then when I fire it up I just "treat as" Utorrent PreDefSecPolicy...and the one time I don't : guess what.
I am stymied, and since it defies logic - there's probably no logical explanation.
If someone told me that their phone rang while it was off the hook, I wouldn't know what to tell them either - and would probably suspect stupidity, insanity or some hybrid.
I guess I was hoping for an "Oh, that? That happens every so often when blah blah blah"
I swear to FSM it really happened

.