Thanks for all of the responses. I think I should have waited, since I'm back up to my usual 48-50mpg on my commute from CT to NYC. Again, we've been having some real hot days and I try to keep the AC off, but eventually I can't take it and turn it on.
Oh, the security system is the factory Honda unit. I got it from Honda Bloomfield ("hondaking143", on eBay for $125. Never a problem dealing with this dealer.

Thaanks again.

Peter