Since this Friday (after a CSSU update) my main N900 won't boot with a microSD card installed.

I can boot without the card, then insert it and everyting is happy.

When I boot with the card I see:

1. Nokia logo
2, uboot, no kernel on SD so falls back to noloboot
3. loading kernel
4. black screen.

Without the card I get:

1..3 as above
4. dots
5 enter pin....

Strange, no?

(Happens with 2 different cards, a 16gb and an 8gb, both SanDisk ULTRA)