What is lib_users?
In openSUSE, there is a very useful command after performing updates that tells me which running processes are using obsolete files after they have been replaced by updated copies. The command is "zypper ps". It helps to avoid rebooting the machine (as I have to do in Gentoo), since I know exactly what needs to be restarted (X, sshd, etc.).
To install lib_users, run the following command:
root # emerge lib_users
After compiling just run "lib_users" command to view the running processes using old files:
root # lib_users
4612 "/opt/sun-jdk-126.96.36.199/bin/java -server -Xmx256m -DopenfireHome=/opt/openfire -Dopenfire.lib.dir=/opt/openfire/lib -classpath /opt/openfire/lib/startup.jar -jar /opt/openfire/lib/startup.jar" 4707 "/usr/sbin/snmptrapd -p /var/run/snmptrapd.pid"
Restart the processes and ready. :)
root # /etc/init.d/openfire restart ; /etc/init.d/snmptrapd restart