I experienced the same thing going from a freshly-installed etch to lenny on ppc, so it's not limited to amd64.
Running: update-xmlcatalog --del --type public --id '-//OASIS//DTD DocBook XML V4.1//EN' --package docbook-xml update-xmlcatalog --del --type public --id '-//OASIS//DTD XML Exchange Table Model 19990315//EN' --package docbook-xml did in fact fix it. This wasn't on a VM, so unfortunately I can't go back and reproduce it. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]