With the release of the iPhone software patch (v1.1.1) users of unlocked phones have been experiencing some technical difficulties, namely their phones being locked and turned into expensive paperweights.
The patch
Problems discovered
The grim discovery
I will admit, that what he's done is deliciously evil. Create a frenzy, shackle users to a subpar carrier, and punish those who break free. He'd make an excellent dictator, I think.