I know someone who got a Treo 300, and I went to show him how to beam to and from it, and it wouldn't receive the beam! (And yes, Beam Receive was on...) He was able to beam his business card to me without any difficulty.

For comparison purposes, I went to a Sprint store and beamed my business card to the demo 300, and it worked fine right away.

So what else could explain it not getting through on my friend's, especially if beaming the other way, at the same distance, worked fine?