operating system: Ubuntu 11.10
kernel: 3.0.0-12

the only way to run mono --runtime=v4.0 /usr/share/inssider/inSSIDer.exe:

Code:
root@Ubuntu:~# mono --runtime=v4.0 /usr/share/inssider/inSSIDer.exe

(inSSIDer:17996): Gtk-WARNING **: gtk_menu_attach_to_widget(): menu already attached to GtkMenuItem

(inSSIDer:17996): Gtk-CRITICAL **: IA__gtk_container_remove: assertion `GTK_IS_WIDGET (widget)' failed

(inSSIDer:17996): Gtk-WARNING **: Can't set a parent on a toplevel widget

(inSSIDer:17996): GnomeShellBrowserPlugin-DEBUG: plugin loaded

** (inSSIDer:17996): DEBUG: NP_Initialize
** (inSSIDer:17996): DEBUG: NP_Initialize succeeded
** (inSSIDer:17996): DEBUG: NP_Initialize
** (inSSIDer:17996): DEBUG: NP_Initialize succeeded
** (inSSIDer:17996): DEBUG: NP_Initialize
** (inSSIDer:17996): DEBUG: NP_Initialize succeeded
** (inSSIDer:17996): DEBUG: NP_Initialize
** (inSSIDer:17996): DEBUG: NP_Initialize succeeded
root@Ubuntu:~#
example:

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