Another yum update problem

[david walcroft]

I'm using FC12 i386 a fresh install, when trying to update all 
programmes or individually I get this error.

[david at reddwarf ~]$ sudo yum update yum
Loaded plugins: presto, refresh-packagekit
fedora/metalink 
                                                                | 4.0 kB 
     00:00
fedora 
                                                                | 4.2 kB 
     00:00
fedora/primary_db 
                                                                | 9.7 MB 
     00:19
updates/metalink 
                                                                |  14 kB 
     00:00
Could not parse metalink 
https://mirrors.fedoraproject.org/metalink?repo=updates-released-12&arch=i386 
error was
File /var/cache/yum/i386/12/updates/metalink.xml.tmp is not XML
Error: Cannot retrieve repository metadata (repomd.xml) for repository: 
updates. Please verify its path and try again

Thanks  david