Ouch. So its still in its joojoo phase. Ok, criticism numero uno: You should absolutely not "presell" these things. You should not look like you're within a hundred miles of taking money before you've got crates of them sitting on a shelf ready to ship tomorrow. Apple can get away with this kind of thing because they have a track record of delivering on time. For everyone else, its a "close browser, c-ya, not coming back until everyone I know has bought one, received it and raved about it" event.

If you responded, in thought, to this with even a tiny bit of "but I need the money from presales to pay the manufactures to get the fist shipment going", hang it up, you're just about certain not to make it in the hardware business.

Sorry to sound harsh, but I've been on this train before.