Description of problem:
I use kpackagekit and I have yum-presto installed, and they don't seem to be compatible. I think that all of the deltarpms get downloaded, but then kpackagekit crashes with the following backtrace (sorry for the big blob):

Traceback (most recent call last):
File "/usr/share/PackageKit/helpers/yum/yumBackend.py", line 1830, in _runYumTransaction rpmDisplay=rpmDisplay)
File "/usr/lib/python2.6/site-packages/yum/__init__.py", line 3653, in processTransaction pkgs = self._downloadPackages(callback)
File "/usr/lib/python2.6/site-packages/yum/__init__.py", line 3677, in _downloadPackages probs = self.downloadPkgs(dlpkgs)
File "/usr/lib/python2.6/site-packages/yum/__init__.py", line 1317, in downloadPkgs self.plugins.run('predownload', pkglist=pkglist)
File "/usr/lib/python2.6/site-packages/yum/plugins.py", line 180, in run func(conduitcls(self, self.base, conf, **kwargs))
File "/usr/lib/yum-plugins/presto.py", line 577, in predownload_hook (problems, more) = downloadPkgs(conduit, pinfo, download_pkgs)
File "/usr/lib/yum-plugins/presto.py", line 419, in downloadPkgs cb.start(text="", size=rebuild_size)
File "/usr/lib/python2.6/site-packages/urlgrabber/progress.py", line 129, in start self._do_start(now)
File "/usr/share/PackageKit/helpers/yum/yumBackend.py", line 2551, in _do_start self.updateProgress(name, 0.0, "", "")
File "/usr/share/PackageKit/helpers/yum/yumBackend.py", line 2593, in updateProgress pkg = self._getPackage(name)
File "/usr/share/PackageKit/helpers/yum/yumBackend.py", line 2534, in _getPackage sections = name.rsplit('-', 2) AttributeError: 'NoneType' object has no attribute 'rsplit' 

I *think* (although I can't guarantee) that this used to work until the most recent yum update ...

Version-Release number of selected component (if applicable):
kpackagekit-0.4.0-7.fc11.x86_64
yum-presto-0.5.0-1.fc11.noarch


How reproducible:
Every time

Steps to Reproduce:
1. Do an update for which drpms are available
  
Actual results:
drpms get downloaded, and then kpackagekit crashes