Comment 25 for bug 754618

I encountered this problem today.

I added a serial-to-USB converter to my Xubuntu 12.04 system to configure some network devices. I added my user account to the dialout group and then relogged. After performing some config on some switches I attempted to open my home directory via Thunar and was greeted with the error described by everyone else.

I do not have "Display chooser on login" enabled in Settings > Session and Startup, however, unmounting /home/myuser/.gvfs did work.