Greetings, I just ran "yum update" on a remote 4.2 Centos install. Then I typed "yum search some package" and got this error message repeating continuously: sem_post: Invalid argument A search for this message revealed only these links: http://www.linode.com/forums/archive/o_t/t_1898/centos4_installations_rpm_database_corruption.html http://bugs.centos.org/view.php?id=1202 If I run the command to look for duplicated RPMs described in those pages I get: -bash-3.00# rpm -qa | sed 's/\([A-Za-z0-9]\)-[0-9].*$/\1/' | sort | uniq -d kernel As a matter of fact, I also get: -bash-3.00# rpm -q kernel kernel-2.6.9-11.EL kernel-2.6.9-22.0.1.EL kernel-2.6.9-34.EL My question is, what is the best, safest way to fix the system? The hack described in those pages doesn't seem (to me) to apply directly to my case. Being the kernel involved, instead of normal packages, I'm hesitant to try something that, as far as I know, may bring this remote server in an unusable state. Any help is appreciated. Marco -- Marco Fioretti mfioretti, at the server mclink.it Fedora Core 5 for low memory http://www.rule-project.org/ If children must grow able to leverage computers to meet their own goals as free citizens, that's not possible with commercial software, period. -- Ruben Safir