I'm running CentOS 6 x86_64 domU on CentOS 5 x86_64 dom0 The host is running 2.6.18-238.19.1.el5xen The guest is 2.6.32-220.2.1.el6.x86_64 'xm list' on the host shows 512mb memory allocated. 'free -m' in the guest shows 224mb memory. 'xm mem-set 21 1024' (21 being the domU ID), 'xm list' now shows 1024mb, but in the guest I now see 736mb. Anyone else seeing this? Any ideas on how to fix it? Chris -- Chris Wik Anu Internet Services Ltd www.cwik.ch | www.anu.net