Help....F7 XGL问题。。。

Garylee

1) Installation check                                           [    OK    ]
2) Download of XGL                                              [    OK    ]
3) Installation of XGL
4) Configuration of XGL
5) Installation of Compiz and Beryl


Loading "installonlyn" plugin
Existing lock /var/run/yum.pid: another copy is running as pid 2294. Aborting.

Error while installing the dependencies (glitz-glx) of XGL.
Installation cannot continue. Do you want to continue anyway [y/N] ? y


Dependencies are needed to install XGL:
Loading "installonlyn" plugin
Existing lock /var/run/yum.pid: another copy is running as pid 2294. Aborting.

Error at the installation of the RPM of XGL.
Installation cannot continue. Do you want to continue anyway [y/N] ?

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kill yum!