Status report:

STATUS: Booted, ubuntu's first time wizard exited with "installer crashed".
N900 keyboard map failed to load, numbers not accessible
bluez failed to install (subprocess dpkg returned error - probably due to skipping dist-upgrade)
REVISION: 50, modified to write on pc's mmcblk0 (just added 'p' before ${PARTITION_NUMBER})
MICROSD: 8 Gb, class 10
BOOTLOADER: U-Boot (pali's)
Now it boots just with "run sdboot" no setenv needed
OPTIONS:
skipped dist-upgrade (time constraint)
selected_image_source: ubuntu-daily
selected_firmware_source: local