I have the same problem even with 3 seconds left on the clock.
My set-up:
Windows Server 2003 with IIS6
PHP version 5.0.4
MySQL 5.0.24
Moodle 1.6.2
Quiz
What to do? Start button disappeared!
ការពិភាក្សាត្រូវបានបិទ ដូច្នេះអ្នកមិនអាចឆ្លើយតបទៀតទេ។