Mock/pungi error - stumped!

[mike cloaked]

I have been trying to build f15 from the development/f15 plus f15
updates repos using pungi from a mock chroot.  I have been doing this
process since f11 days.

I use a standard .cfg file to create the chroot  with the mock -r
command as user with only changes to the repo definitions, and then
run pungi in the chroot with a kickstart file with some packages
removed plus a few additional packages to include in the iso that
builds.

However I have a problem with the build that I can't resolve.
The machine running the build is f13 up to date, and the command I use
to run pungi is as follows:
pungi --nosource --nodebuginfo -G -C -B -I --flavor Fedora --name
Fedora-15 -c /usr/share/spin-kickstarts/fedora-install-f15-mc.ks
--force

I have also cleaned out the /var/cache/mock area as well as
/var/lib/mock before setting up the chroot and then installing pungi
and spin-kickstarts in the chroot, and then running the pungi command.

However the build proceeds to the point in the logfile with the last
few entries:

pylorax.yumhelper.DEBUG: removed
/work/i386/yumroot/installroot//usr/share/omf/zenity/zenity-zh_CN.omf
pylorax.DEBUG: fedora-15-logos  ['/etc/*', '/usr/share/firstboot/*',
'/usr/share/gnome-screensaver/*', '/usr/share/icons/Bluecurve/*',
'/usr/share/icons/oxygen/*', '/usr/share/pixmaps/*',
'/usr/share/plymouth/*']
pylorax.yumhelper.ERROR: cannot erase fedora-15-logos: Package not installed
pylorax.INFO: cleaning up python files
pylorax.INFO: creating the initrd
pylorax.images.INFO: creating required directories
pylorax.images.INFO: copying kernel image
pylorax.images.INFO: compressing the install tree

It seems to hang for up to 12 hours at the final compression (before I
kill the process) and this seems all wrong - at least it never used to
do this and the build used to complete in about an hour and a half on
this same machine.

Any ideas what I might be doing wrong?

Thanks

-- 
mike c