[Errno -1] Metadata file does not match checksum

[hicham]

Hello
 each time I do a yum update ,I keep having those outputs:
Trying other mirror.
primary.xml.gz            100% |=========================| 433 kB    00:15
http://mirrors.kernel.org/fedora/core/updates/5/x86_64/repodata/primary.xml.gz:
[Errno -1] Metadata file does not match checksum
Trying other mirror.
primary.xml.gz            100% |=========================| 433 kB    00:14
http://ftp.upjs.sk/pub/fedora/linux/core/updates/5/x86_64/repodata/primary.xml.gz:
[Errno -1] Metadata file does not match checksum
Trying other mirror.
primary.xml.gz            100% |=========================| 433 kB    00:14
http://ftp1.skynet.cz/pub/linux/fedora/updates/5/x86_64/repodata/primary.xml.gz:
[Errno -1] Metadata file does not match checksum
Trying other mirror.

anyone got a solution for this ?
thanks
hicham