Description of problem:
when i choose multiple package in yum installer this error is occurred

Component: Software Manager
Summary: TB21f8f94d packages.py:485:getDiscNum:ValueError: invalid literal for
int() with base 10: ''

Traceback (most recent call last):
  File "/usr/sbin/pirut", line 337, in _apply
    self.applyChanges(self.mainwin)
  File "/usr/lib/python2.5/site-packages/pirut/__init__.py", line 722, in
applyChanges
    dlpkgs = self.downloadPackages(mainwin)
  File "/usr/lib/python2.5/site-packages/pirut/__init__.py", line 417, in
downloadPackages
    probs = self.downloadPkgs(dlpkgs)
  File "/usr/lib/python2.5/site-packages/yum/__init__.py", line 798, in downloadPkgs
    remote_pkgs.sort(mediasort)
  File "/usr/lib/python2.5/site-packages/yum/__init__.py", line 747, in mediasort
    a = a.getDiscNum()
  File "/usr/lib/python2.5/site-packages/yum/packages.py", line 485, in getDiscNum
    return int(fragid)
ValueError: invalid literal for int() with base 10: ''

Local variables in innermost frame:
self: libifp - 1.0.0.2-4.fc6.i386
netloc: 
fragid: 
path: //1180278169.239747
query: 
scheme: media