^C[root@localhost ~]# yum update
Loaded plugins: fastestmirror, refresh-packagekit, security
Loading mirror speeds from cached hostfile
* base: mirror.bit.edu.cn
* extras: mirror.bit.edu.cn
* updates: mirror.bit.edu.cn
Setting up Update Process
Resolving Dependencies
--> Running transaction check
---> Package rpm.i686 0:4.8.0-19.el6 will be updated
--> Processing Dependency: rpm = 4.8.0-19.el6 for package: rpm-libs-4.8.0-19.el6.i686
---> Package rpm.i686 0:4.8.0-27.el6 will be an update
---> Package rpm-python.i686 0:4.8.0-19.el6 will be updated
---> Package rpm-python.i686 0:4.8.0-27.el6 will be an update
--> Finished Dependency Resolution
Error: Package: rpm-libs-4.8.0-19.el6.i686 (@base/$releasever)
Requires: rpm = 4.8.0-19.el6
Removing: rpm-4.8.0-19.el6.i686 (@base/$releasever)
rpm = 4.8.0-19.el6
Updated By: rpm-4.8.0-27.el6.i686 (base)
rpm = 4.8.0-27.el6
You could try using --skip-broken to work around the problem