Cant update virtual min to latest package

See error below. I have tried yum clean all, --skip-broken, package-cleanup --problems, package-cleanup --dupes, rpm -Va --nofiles --nodigest but constantly get the same errors. Please can somebody help?

Now updating webmin ..

  Installing package(s) with command yum -y install webmin ..

  Loaded plugins: fastestmirror, priorities
  Loading mirror speeds from cached hostfile
  Setting up Install Process
  Resolving Dependencies
  --> Running transaction check
  ---> Package webmin.noarch 0:1.510-1 set to be updated
  http://software.virtualmin.com/gpl/rhel/5/x86_64/repodata/filelists.xml.gz: [Errno -1] Metadata file does not match checksum
  Trying other mirror.
  Error: failure: repodata/filelists.xml.gz from virtualmin: [Errno 256] No more mirrors to try.
   You could try using --skip-broken to work around the problem
   You could try running: package-cleanup --problems
                          package-cleanup --dupes
                          rpm -Va --nofiles --nodigest

  .. install failed!

No packages were installed. Check the messages above for the cause of the error