Yum error

[Felix Jodoin]

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Content-Type: text/plain
Content-Transfer-Encoding: 7bit

Hello,
I have decided to "yum up to fedora-devel and ruffpack", but once all
the headers copy (yum update), I get the message (which is in the
attachement). 
Thanks in Advance, Felix J

Message Follows:


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Content-Description: 
Content-Disposition: inline; filename=yum-error
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit

Gathering package information from servers
Getting headers from: Yellow Dog Linux 3.0 base
Getting headers from: Fedora Core Development
Getting headers from: Yellow Dog Linux Ruffpack
Getting headers from: Yellow Dog Linux 3.0 updates
Finding updated packages
Downloading needed headers
Resolving dependencies
Traceback (most recent call last):
  File "/usr/bin/yum", line 44, in ?
    yummain.main(sys.argv[1:])
  File "yummain.py", line 202, in main
  File "nevral.py", line 263, in resolvedeps
  File "archwork.py", line 63, in bestarch
IndexError: list index out of range

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