One minor problem I see with get partition ID from blkid is that it doesn't work from /etc/profile with user privileges The "command not found" errors are easy to fix, just insert the complete path "/sbin/blkid". Then "debian su - user" does work as intended.
However with "debian su -" (desirable for full localization also for root) the prompt doesn't change at all compared to Maemo. The reason is that there still is a /root/.bashrc file which sets PS1.
I've continued my testing by installing a few additional packages, and every "apt-get install" has an error message at the end of the process: Code: fopen: Permission denied I didn't get this with v3b. It seems harmless, but how can root get such a message? EDIT: seems to occur typically after the trigger of man-db, but I can run man-db manually (no pun intended) without error messages.
fopen: Permission denied