After playing with buildroot-avr32 on my NGW100 since rc1 if found some (minor) flaws. They do not affect usability but are annoying.
1) Living in the timezone that is given in /etc/TZ by default (CET1CDT) i observed an offset of 2 hours behind. That is after getting the time from NTPDATE. Changing to CET-1CDT fixed that - but the hwclock applet from busybox obviously has another view of the word. :?
2) The /etc/hosts file needs an IPv6 entry for ngw for proftpd to start unobstructed.
::1 ngw.example.net ngw
Also the /etc/proftpd.conf file needs the following two entries.