xvfb-run from xorg-x11-server-Xvfb-1.9.0-7.fc15.i686 package dies with the following error:
$ xvfb-run asdf
mktemp: too few X's in template `Xauthority'
It might make sense to update xvfb-run to the latest version from http://git.debian.org/?p=pkg-xorg/xserver/xorg-server.git;a=blob;f=debian/local/xvfb-run;hb=HEAD
Debian's xvfb-run also contains a fix for CVE-2009-1573 and it looks like Fedora's xvfb-run is still vulnerable.
Please test with packages from http://koji.fedoraproject.org/koji/taskinfo?taskID=2464575 ... has it been fixed for you?
Tested the packages. xvfb-run worked fine for me and the issue described in CVE-2009-1573 appears to be fixed as well.
Updated build is http://koji.fedoraproject.org/koji/taskinfo?taskID=2464867, but yes this seems to be fixed.
xorg-x11-server-1.9.0-9.fc14 has been submitted as an update for Fedora 14.
xorg-x11-server-1.8.2-4.fc13 has been submitted as an update for Fedora 13.
xorg-x11-server-1.8.2-4.fc13 has been pushed to the Fedora 13 stable repository. If problems still persist, please make note of it in this bug report.
xorg-x11-server-1.9.0-9.fc14 has been pushed to the Fedora 14 stable repository. If problems still persist, please make note of it in this bug report.