Fine for that machine.
According to http://www.popularmechanics.com/technology/how-to/computer-s... a quarter of the country in this election will use paperless machines. No paper trail at all.
According to polls, the election will be decided by swing states that are expected to have margins of victory under 4%.
If, hypothetically, the election is decided for Romney in states like Pennsylvania which polls indicated were leaning Democratic on electronic machines where there is no paper trail, will you be inclined to believe that his last minute ads made that a fair win, or would you be inclined to believe that the election was stolen? (Note, the information that Pennsylvania is one of the states without a paper trail is in the article, published today, that I linked to.)
I, personally, would be inclined towards the theory that the election was stolen, and the purpose of his last minute ad buys was to create plausible deniability for the manipulation. If, on the other hand, there was a paper trail and audits verified the count, I would be much more comfortable with that election outcome.
Whether or not this machine is auditable, unauditable voting machines are a real problem.