Strange issue: sudo: effective uid is not 0, is sudo installed setuid root?

[mk01]

@d4m4s74

technically auto update process runs the same way as manually started with apt upgrade. hard to guess what was the ugly enemy causing this but definitely your file/folder owner ship was changed to xbian - binaries like su, sudo and other low level system utilities have suid bit set to 1 and are (normally owned by root) - so the process can become owned by root regardless of ID of owner of starting process.

and because xbian's ownership sudo complained about not having effective id 0. I will recheck package's scripts for any ugly stupid thing with using chown incorrectly. everything is possible. if you wan't help investigating maybe, those packages are -xbmc, -config-shell, -config-xbmc, -tvheadend. should be all.

if you hit on this again, let me know. can we exclude any stupid typo like this with chown on your side? (just asking, will check our debs for sure in any case).