----- "marc pascual" <marc.m.pascual(a)gmail.com&gt; wrote: The short answer is: kernel-debuginfo-2.6.18-92.1.10.el5.x86_64.rpm That RHEL5 kernel version offers 3 different x86_64 kernel packages: kernel-2.6.18-92.1.10.el5.x86_64.rpm kernel-xen-2.6.18-92.1.10.el5.x86_64.rpm kernel-debug-2.6.18-92.1.10.el5.x86_64.rpm Each of the above has its own associated debuginfo package, which contains the relevant vmlinux file for that kernel type: kernel-debuginfo-2.6.18-92.1.10.el5.x86_64.rpm kernel-xen-debuginfo-2.6.18-92.1.10.el5.x86_64.rpm kernel-debug-debuginfo-2.6.18-92.1.10.el5.x86_64.rpm And when installing any of the -debuginfo packages above, rpm requires that the kernel-debuginfo-common package be installed along with it: kernel-debuginfo-common-2.6.18-92.1.10.el5.x86_64.rpm Like the name says, the "common" package has debuginfo data that is the same for all 3 kernel types. Dave