Description of problem:  yum update or yum install results in an error:  error was [Errno -1] Metadata file does not match checksum


Version-Release number of selected component (if applicable):  RHEL5 64 bit


How reproducible:  Every time, on every machine we have


Steps to Reproduce:
1.  yum update
2.  yum install (package)
3.
  
Actual results:

yum update
Loaded plugins: rhnplugin, security
rhel-x86_64-client-5                                                     | 1.4 kB     00:00     
rhel-x86_64-client-5/primary                                             | 3.3 MB     00:00     
rhel-x86_64-client-5/primary                                             | 3.3 MB     00:00     
rhel-x86_64-client-5/primary                                             | 3.3 MB     00:00     
rhel-x86_64-client-5/primary                                             | 3.3 MB     00:00     
Error: failed to retrieve repodata/7b9ccb57e462da92f225ab2694e9f511dc848b46-primary.xml.gz from rhel-x86_64-client-5
error was [Errno -1] Metadata file does not match checksum



Expected results:  yum update complete successfully


Additional info:  only seems to be happening on the 64 bit installs 32 bit RHEL5 boxes are working fine