using versions 2.8-20100913 and 2.8-20100915 - when i shutdown postfix, i sometimes (more often that not) see the postscreen daemon hanging out around 10 seconds after the master process terminates. Same results on two different machines (intel/amd).
This is only a problem when i do a /etc/init.d/postfix restart. It's likely a problem with the rc scripts (gentoo here) but i thought i would post this observation anyway. Vernon