yum and yum-utils out of sync?

[sean]

  yumdownloader --help
Traceback (most recent call last):
   File "/usr/bin/yumdownloader", line 27, in ?
     from yum.packages import parsePackages, returnBestPackages
ImportError: cannot import name returnBestPackages


yum-2.5.0-0.20051210
yum-utils-0.3.1-1.fc5

Any suggestions?

sean