gvfsd-smb hangs with 100% cpu usage on connect

[z]

Binary package hint: gvfs

Opening a samba share (requires username and password) with nautilus causes gvfsd-smb to hang with 100% cpu.
Url is of the form smb://[user@]host/share. Share is hosted on ubuntu lucid and works with ubuntu lucid clients, and did work on maverick clients previously. Smbclient functions as expected.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: gvfs-backends 1.6.3-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.35-20.29-generic 2.6.35.4
Uname: Linux 2.6.35-20-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
Date: Tue Sep 7 16:32:32 2010
ExecutablePath: /usr/lib/gvfs/gvfsd-smb
ProcEnviron:
 SHELL=/bin/bash
 PATH=(custom, user)
 LANG=en_US.utf8
SourcePackage: gvfs