error when wring to a gvfs mounted shared folder which you should have permission

["minqiang wu" <minqiang wu gmail com>]

On GNOME 2.22(Ubuntu8 or SUSE11), using gvfs-mount to mount an writable shared
folder ( gvfs-mount smb://username {ip address}/{folder name} ). 
After you use nautilus and open the gvfs-mount folder, you try to write a new file in the 

foler, you may encounter the "permission denied" error message prompt up. 

The reproduce possibility is about 30%. 

Does anyone know this issue? or how to fix it?