Description of problem:
When running virt-manager on machine A and opening a connection to machine B, to add a VM on machine B, one cannot add a disk or partition (eg /dev/hde) because virt-manager does not allow "browse local" when connecting remotely. It also does not allow typing in "/dev/hde" for the disk image on the remote server.
using ssh -X machineB and then running virt-manager locally works around the problem, but is terribly slow, even when machine A and machine B are on the same LAN.
There is no way to make 'browse local' work over a remote connection. However, next version of virt-manager will try to use libvirt storage APIs to at least make typing in /dev/hde work.
*** This bug has been marked as a duplicate of bug 557107 ***