This was recently posted over at HTC EVO's Facebook wall
"Robert Becher hey everyone i think they fixed problem with the card on phone
I contacted sprint about this problem tonight, they told me they knew about it already. Sprint said the only phones that have this problem are the ones that google gave to their employees and to the reviewers. It was a software issue,apparently the issue w...as only with the first 2,000 phones google gave out. With the phones being released on June 4th, the software issue is resolved. I am switching form the Crap pre to the HTC Evo 4G, and I am glad to now be a part of Android Forums. Thanks guys and have a good night."
http://www.facebook.com/?ref=logo#!/evophone?ref=ts