nautilus doesn't prompt for replace when moving files from a samba share

When I cut and paste from a Samba drive (using either the menu or CTRL-x/CTRL-v) to a local drive using Hardy's latest nautilus, it doesn't ask if I want to replace an existing file with the same name, but just performs the move operation.

It does ask if I select copy, just not for move.

During the move, the existing file's details are not updated on the screen as the file gets larger (eg when copying a 100 MB file, normally nautilus will refresh the size of the file every few seconds, but not if it is automatically overwriting an existing file.

It seems that it is only for Samba drives that this is a problem - if I cut and paste within non-Samba drives, nautilus always seems to ask if I want to replace the file, as it should.

To reproduce: create a new file eg 'test' on the Samba drive, copy it to a local drive so it already exists, and then cut and paste it over the file on the local drive.

(I checked that if I truncated the local drive copy and then did the move, the file was correctly moved, ie the truncated file was overwritten.)

Version info:

linux kernel 2.6.24-8-generic
nautilus 1:2.21.91-0ubuntu3
samba 3.0.28-1ubuntu3