http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5.2/html/Virtualization/sect-Virtualization-THow_To_troubleshoot_Red_Hat_Virtualization-Full_virtualization_guest_console_access.html In this section it says "you must edit the configuration file in the /etc/xen directory". What do you edit in there? It doesn't say. In addition, this is a grub example. Should something be noted for ia64?
fixed in svn revision 11430.