# yum -y update
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
 * base: centos.hostace.ru
 * epel: mirror.xfes.ru
 * extras: centos.hostace.ru
 * updates: centos.ustc.edu.cn
Setting up Update Process
Resolving Dependencies
--> Running transaction check
---> Package filesystem.i386 0:2.4.0-3.el5.centos set to be updated
--> Finished Dependency Resolution

Dependencies Resolved

================================================================================================================================================
 Package                            Arch                        Version                                    Repository                      Size
================================================================================================================================================
Updating:
 filesystem                         i386                        2.4.0-3.el5.centos                         updates                         1.0 M

Transaction Summary
================================================================================================================================================
Install       0 Package(s)
Upgrade       1 Package(s)

Total size: 1.0 M
Downloading Packages:
Running rpm_check_debug
Running Transaction Test
memory alloc (134217728 bytes) returned NULL.