Couple of data points on my N800 install yesterday. Hope it's useful because this is my first experience with either Chinook or Diablo, it was as vanilla as possible and might help explain the 24 hour theory on SSUs.

Yesterday I finally decided to flash to Diablo. I had been waiting for a downloadable update from 23-14. When that didn't come, I decided to go for it anyway. Started about noon.

First attempt interrupted a couple of seconds in and got into an infinite boot loop. I panicked but pulled the battery and was able to go back into the flashing boot state. Next attempt worked fine.

First thing I did was update the catalogs. It immediately found 30-2, which I accepted. Checked a few things and went about reinstalling apps. All normal repositories -- no Chinook.

Everything installed fine, except I couldn't update Python nor install Canola. Camera automatically fired off internet chat and rotated properly.

About 15 minutes in, I got the flashing I telling me another update was available. I had no idea that it existed. Went to 36-5. That went OK except it didn't auto start after the reboot shutdown. Had to hit the power button myself.

Still fine. Then I installed Maemo Mapper from Chinook Extras. No problem.

I still can't update Python nor install Canola. Maemo Mapper was working fine but it locked up on me once and I had to pull the battery.

In limited testing the only thing 36-5 appears to have broken is Camera. It works, but popping it out no longer starts internet chat and it doesn't auto-rotate anymore. The camera thing is weird because others in this thread have said it fixed theirs. Hope the next SSU fixes it for me.