Emerging new nautilus version all emblems and custom folder icons dissapear and can't be set again from folder propriety. Reproducible: Always
The problem still exists in new 2.28 version
May be you could report on upstream ? (if a equivalent bug does not exist yet)
Looks like: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=548143 solved with: nautilus (2.28.0-2) unstable; urgency=low . * Require a recent gvfs for the metadata store. Closes: #548142, #548143.
Closing fixed then. Thanks for the heads up.