This bug tracks packages that appear to include a file in /var/run or /var/lock. These directories will now be mounted as tmpfs. For details about this change please consult http://lists.fedoraproject.org/pipermail/devel-announce/2010-November/000726.html For packages this means that %ghost needs to be added to all files that are placed in either of these two directories. For details about %ghost see http://www.rpm.org/max-rpm-snapshot/s1-rpm-inside-files-list-directives.html#S3-RPM-INSIDE-FLIST-GHOST-DIRECTIVE , for more information on the F15 feature see the feature page https://fedoraproject.org/wiki/Features/var-run-tmpfs . Ff you have any further questions, don't hesitate to ask on fedora-devel or ask me Lennart Poettering personally.