Yahoo! News - Software Glitch Plagues New Voting Machines:

"Florida election officials said a software glitch in the new touchscreen voting machines could make manual recounts of some ballots impossible.
Lake County spent $3.1 million to buy about 1,000 of the new touchscreen voting machines, and the machines have already worked successfully in the 2002 election, WESH NewsChannel 2 reported.
But state officials now admit that during tests some machines failed to provide a consistent log after the fact of who voted for whom. It was a glitch first discovered in Miami-Dade County one year ago. "