does it do this with all keys? maybe transponder in a key going bad? just a maybe.... try your other keys and see what it does.
if you have a second vehicle that also has some sort of transponder system (most cars out there now days) the other transponder pellet could have been giving the factory immobilizer system a false reading by it seeing that second key as part of the transponder reading in addition to your honda key. that is why i keep mine and mrs. yoda's keys (07 GTI with transponder) on seperate rings. hopefully that is all it was, and if it was you might be able to get one of those little rings that allow you to link them and seperate them (the other key) easily, or just keep it on a seperate keyring.HA!!! Typical woman! I DO have a lot of keys on my key ring... I will take them off and see what happens.... so far I've started it twice today and it has started right up!!! Thanks for all your help! I will keep all posted in case someone else has the same issue!!