yum clean problems

[Raghu Vadapalli]

see the log below. Any ideas ?
Thanks
Raghu.
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Gathering header information file(s) from server(s)
Server: Fedora Core 1 - i386 - Base
Server: Mozilla updates
Server: Fedora Core 1 - i386 - Released Updates
Finding updated packages
Cleaning packages and old headers
Traceback (most recent call last):
  File "/usr/bin/yum", line 60, in ?
    yummain.main(sys.argv[1:])
  File "yummain.py", line 251, in main
  File "clientStuff.py", line 960, in take_action
  File "clientStuff.py", line 677, in clean_up_old_headers
  File "clientStuff.py", line 66, in getENVRA
TypeError: unsubscriptable object