[root@sogo ~]# yum update Loaded plugins: rhnplugin, security Skipping security plugin, no data Setting up Update Process Resolving Dependencies Skipping security plugin, no data --> Running transaction check --> Processing Dependency: libevent-1.1a.so.1()(64bit) for package: memcached ---> Package libevent.x86_64 0:1.4.13-1 set to be updated --> Finished Dependency Resolution memcached-1.4.2-1.el5.x86_64 from installed has depsolving problems --> Missing Dependency: libevent-1.1a.so.1()(64bit) is needed by package memcached-1.4.2-1.el5.x86_64 (installed) Error: Missing Dependency: libevent-1.1a.so.1()(64bit) is needed by package memcached-1.4.2-1.el5.x86_64 (installed) You could try using --skip-broken to work around the problem You could try running: package-cleanup --problems package-cleanup --dupes rpm -Va --nofiles --nodigest [root@sogo ~]#