OK with version 3.0.2~beta3~git20141009.091827.60ca887-1
Tested on Debian Wheezy 3.2.46-1+deb7u1
Reproduced when shuting down obm-sync and try to synchronize.
Now runtime errors which could occur when a smartphone is trying to authenticate returns 500 instead of 401.
No tests done. It's hard to reproduce the Tosca (+ no devices available).