FWIW: I had 4 of them in total today (The last one date ca. 08:00 UTC)
http://buildsys.fedoraproject.org/logs/fedora-6-extras/35707-perl-Class-ReturnValue-0.54-1.fc6/
http://buildsys.fedoraproject.org/logs/fedora-6-extras/35708-perl-Class-ReturnValue-0.54-1.fc6/
http://buildsys.fedoraproject.org/logs/fedora-6-extras/35710-perl-Class-Inspector-1.17-1.fc6/
http://buildsys.fedoraproject.org/logs/fedora-6-extras/35711-perl-Class-ReturnValue-0.54-1.fc6/

Build rebuild attempts after ca. 12:00 UTC succeeded:
http://buildsys.fedoraproject.org/logs/fedora-6-extras/35712-perl-Class-ReturnValue-0.54-1.fc6/
http://buildsys.fedoraproject.org/logs/fedora-6-extras/35713-perl-Class-Inspector-1.17-1.fc6/

So something having touched the system between ca. 08:00 UTC and 12:00
UTC seems to have "magically" fixed this issue.

Hello Mike,

other cases,

{{{
http://buildsys.fedoraproject.org/logs/fedora-4-epel/35731-cvsweb-3.0.5-2.el4/
http://buildsys.fedoraproject.org/logs/fedora-5-epel/35732-cvsweb-3.0.6-4.el5/
http://buildsys.fedoraproject.org/logs/fedora-4-epel/35730-cvsweb-3.0.5-2.el4/
http://buildsys.fedoraproject.org/logs/fedora-4-epel/35754-cvsweb-3.0.5-3.el4/
}}}

-- /Marek.

Here's an additional example:

http://buildsys.fedoraproject.org/logs/fedora-6-extras/36021-cbios-0.21-3.fc6/noarch/

My bits: http://buildsys.fedoraproject.org/logs/fedora-6-extras/36036-poster-20060221-4.fc6/
Similarly to (I think) Marek's failed builds, this is also package that used to be orphaned and was resurrected, I that matters.

Interestnigly, the first poster build "failed" on i386, next one on ppc, and then on x86_64, and then again on x86_64.

It happened again:
http://buildsys.fedoraproject.org/logs/fedora-6-extras/36088-perl-Text-Quoted-2.02-3.fc6/

Same for me look at:
http://buildsys.fedoraproject.org/build-status/job.psp?uid=36212
http://buildsys.fedoraproject.org/build-status/job.psp?uid=36213

Still looking into this, the priority's were set appropriately. We are well aware this is still happening but its been difficult to troubleshoot since its been happening so rarely as of late.

We think mschwent has fixed this, he rocks. If there are any more issues please re-open the ticket.