I have not yet upgraded my news site from Wordpress 2.9.1 to 2.9.2 because of some issues with the previous upgrade. I decided to just wait for the big 3.0 upgrade. But in the meantime, the WP-DB Manager plugin I use to backup the database has stopped working as it should. I had it set to back up every week, but it stopped doing any automatic backups in the last month or so. I discovered this when I suddenly needed a backup from a few days ago, and found that it hadn't done a backup since April 15! Luckily, I had done a manual one yesterday morning.
It may be smart, still, to hold off on the update. And I'm waiting to update Atahualpa, too, until all the fixes are done.
If you were me, would you skip WP 2.9.2 and wait for 3.0? I hope that by waiting, I'm not missing some interim step that would be important.