yum lock 问题

centos5.6下yum install的时候，报了一堆错误，如下：

Another app is currently holding the yum lock; waiting for it to exit...
  The other application is: yum
    Memory :  38 M RSS ( 37 MB VSZ)
    Started:Sta Jul 24 16:28:58 2010 - 1:37:07 ago
    State  : Sleeping, pid: 13020

解决办法：

 

rm -f /var/run/yum.pid
/sbin/service yum-updatesd restart
Stopping yum-updatesd:                                     [ OK ]
Starting yum-updatesd:                                     [ OK ]