Created attachment 4705 
Possible patch

Hi,

On some setups (always reproducible on Ubuntu 12.10, but I've read similar reports on Archlinux, and it seems to occur only with the latest gvfs 1.14.x), "volume-added" signals are sent for each volume the first time g_volume_monitor_get_volumes () is called.

This leads to duplicated volumes appearing in the sidepane (e.g. <http://pix.louiz.org/upload/original/1351761313.png>).

Maybe it's a bug in GIO/udev/GVfs, but regardless I think this can easily be avoided if thunar_device_monitor_volume_added () checks that the new volume doesn't exist already, either in the hidden list or the hash table.

Thanks.

(sorry, I couldn't test the possible patch here because I don't have this issue on Debian unstable, but I tested a similar patch against thunar 1.4.x for Xubuntu and it seemed to work fine)