RX8Club.com - Security/Engine not starting

I have read many of the posts from here and still wander about this problem:
At times, and this varies WIDELY, my engine will simply not start, not even turn over. As an example, the other day I took my daughter back to college. A beautiful fall day here in the northeast so I took my 04/6 spd out for a ride. 53 miles, so the car got plenty hot. We arrived and went on a tour of the new apartments she is considering. Upon coming back out I went to start the car and NOTHING....All I got was th flashing security light. Now this has happened in the past along with it stalling out while driving. The very first time I took it into the dealer was told that there was an "open circuit" found and fixed. That seemed to solve the problem and I had driven this not even thinking about it this whole year...untill the other day when it happened again.

This time was a little different though as after getting just the security light and no ther lights... I kept on turning the key....while hearing some promising "clicks" and finally getting some other dash lights on....and it finally did start. I drove it the whole way home with no problems and it has been "normal" since. Again I took it in to the dealer and was told that nothing was found to be abnormal from the starting celenoid to the starter.

I don't know what the circumstances are with "flooding" but it seems that I get NOTHING when I turned the key except for the security light still flashing - NO other lights appeared.

I know there is a chip in the key and am wandering if that is going bad - is the simple solution to use my other key?

ANY help would be GREATLY appreciated as I travel a lot and want to make sure that when I turn the key over the car starts.....

THANKS...!!!!!