Hello, I wasn't able to replicate this issue with an amd64-unstable sbuild chroot on my system. I ran it in several times in case it was a intermittent failure. for a in $(seq 10) ; do sbuild -c unstable-amd64-sbuild signon- ui_0.17+15.10.20150810-2.dsc ; done Do you have any thoughts what might be different about our build environments? Diane