From the seti-site:

July 22, 2004
We found and fixed the no results bug. It was a malformed embedded SQL
query. But we are leaving the scheduler off overnight to let the
transitioner work through it's backlog. The transitioner works a great deal
faster with a small backlog and we hope yesterday's changes will go a long
way in preventing a large backlog from recurring.

What does the transitioner actually do?