Boing Boing has two good posts on voting problems in the US of A.
Reader Brian Nicks had a bona fide error when voting with a DRE machine. And he even managed to snap the error with his phone camera and get a camera crew to film it. Nice. Link
Another reader, Kent Brewster, had a rather disturbing time when he asked to vote on paper (as he is allowed to do). The post says it all but it sounds like people choosing to avoid the electronic systems are being given an intentionally hard time. Link