According to Boing Boing, Diebold voting machines are even more easily hacked than previously thought. Standing at a machine for only a few minutes, Harri Hursti was able to load his own software on the machine.
Las Vegas gambling machines are far more secure than voting machines. Heck, Diebold's ATM machines are far more secure than their voting machines. If you want your vote to count, insist on paper ballots.
UPDATE: Slashdot also has a story on this. Diebold needs to be sued by every county that bought their broken piece-of-crap voting machines.