Its definitely the problem, if you miss it.
Like hankscorpio said, hes missed a few because he was distracted.
If youre are focusing on gettin into the tournament in the last minute, and you're doing it right, theres no problem.
Like I said, I spaced on a tournament yesterday, was doin other stuff, looked at the FTP tournament lobby, it said 12 seconds. I had to click to a different tab on my internet browser, then I had to click Show Password, then I typed the password into the box, and got into the tournament.
This system is awesome. It is way better than letting the password get leaked.