Weird search behavior

I have a site where I used dataassist to create s imple search and results page(s) for my customer. Their end users can simply input a zip code and all of the locations where their product can be purchased within that zip code display (I also integrated this with the google map extension).

Here is the odd behavior...The first time someone opens IE (I have been unable to duplicate this in firefox), they type in the zip and hit enter, it displays the first twelve or so entries from the db instead of the ones from that area (although it is included in the result). If they click the button with their mouse, it works fine and if they come back and try again, it works fine. It is really weird.

Thoughts?

~Clay