Hi!

I did system updates and droid 4 refused to boot. It attempted to
start X then proceeded to shutdown.

Watching messages scroll by I realized there's no space left in root
filesystem... and soon I found culprit:

2125580          daemon.log
2154620          syslog
root@amd:/mnt/var/log# > daemon.log
root@amd:/mnt/var/log# > syslog

Freeing 4GB of space made the phone boot again.

Best regards,
                                Pavel
-- 
http://www.livejournal.com/~pavelmachek