[wlug] sudo broken after upgrade from gutsy to hairy^Whardy

I just upgraded a spare box, to see if it's safe to upgrade my main machine, and the upgrade has broken sudo. When I try to use sudo it says: sudo: unable to resolve host calc calc being the hostname of this machine. How do I fix this? I guess adding the hostname to /etc/hosts would fix it but I can't do that because sudo is broken. Also I haven't set up a root account on this machine. Aside from booting from a rescue disk is there any other way to fix this? Glenn -- Glenn Ramsey <glenn(a)componic.co.nz> 07 8627077 http://www.componic.co.nz