I found that lm_sensors got installed because of a dependency on my first Xen VM that I updated to 5.3. lm_sensors doesn't make sense in a VM. I thought, ok let's check after the update who wants it. However: rpm -q --whatrequires lm_sensors no package requires lm_sensors (same for --triggeredby with lm_sensors or the packages below) Trying to remove lm_sensors reveals these packages: Removing: lm_sensors i386 2.10.7-4.el5 installed 1.8 M Removing for dependencies: cacti noarch 0.8.7d-1.el5.rf installed 5.1 M net-snmp i386 1:5.3.2.2-5.el5 installed 2.8 M net-snmp-utils i386 1:5.3.2.2-5.el5 installed 342 k php-snmp i386 5.1.6-23.el5 installed 24 k But trying to remove any of them doesn't show a dependency on lm_sensors. How can I find out what triggered the installation of lm_sensors in the upgrade? Kai -- Kai Schätzl, Berlin, Germany Get your web at Conactive Internet Services: http://www.conactive.com