I have started seeing reports online, including one on TUAW, stating that AT&T might somehow restrict ActiveSync access such that you would need the far more expensive enterprise data plan to utilize the feature. Is this really something that AT&T has the ability to lock you out of using? I would think that as long as the option remains on the software for the phone to set up ActiveSync, that AT&T wouldn't be able to have much control. Wouldn't their servers just see it as regular data being transfered?