Everyone,
As of Second Life 0.8, folks who refer new users into the system get a few extra "high score" points on the leaderboards, and hence the opportunity for a higher stipend bonus.
Due to this change there was an error in the leaderboard update last night. Some people's high score numbers were dropped to zero. This would also cause your estimated stipend bonus to drop to zero.
The problem is fixed. The leaderboards have been updated and the estimated (and actual) stipends will be correct as of late tonight.
Thanks to the folks who reported the bug!
James Linden