Problems with users at xfce

[Elisio Catana]

Hello

I try configure my clients to use XFCE (with kiosk mode), but at this 
moment only one user can login and to all other users i can't login and 
i have this error:

(gnome-terminal:10366): Gtk-CRITICAL **: file gtkstyle.c: line 669 
(gtk_style_finalize): assertion `style->attach_count == 0' failed
*** attempt to put segment in horiz list twice
Extra content at the end of the document

(xfce-mcs-manager:10440): libxfcegui4-CRITICAL **: file 
netk-workspace.c: line 160 (netk_workspace_get_name): assertion 
`NETK_IS_WORKSPACE (space)' failed

(xfce-mcs-manager:10440): libxfcegui4-CRITICAL **: file 
netk-workspace.c: line 160 (netk_workspace_get_name): assertion 
`NETK_IS_WORKSPACE (space)' failed

(xfce-mcs-manager:10440): libxfcegui4-CRITICAL **: file 
netk-workspace.c: line 160 (netk_workspace_get_name): assertion 
`NETK_IS_WORKSPACE (space)' failed

(xfce-mcs-manager:10440): libxfcegui4-CRITICAL **: file 
netk-workspace.c: line 160 (netk_workspace_get_name): assertion 
`NETK_IS_WORKSPACE (space)' failed
xfce4-session: Unable to load failsafe session, exiting. Please check
               the value of the environment variable XDG_CONFIG_DIRS
               and make sure that it includes the following path:

                /etc/xdg


Can anyone helpme??
                                                         

-- 
Elísio Catana
ecatana at hal.min-saude.pt

Divisão de Informática e Telecomunicações
Tel: 272 000 155
Fax: 272 000 257
email: informatica at hal.min-saude.pt

Hospital Amato Lusitano
Castelo Branco
Av. Pedro Álvares Cabral
Tel: 272 000 272
Fax: 272 000 257