Is there a plugin for viewing Open Office (.sxc) spreadsheets? They don't display at all.
Open Office text documents (.sxw) and Excel spreadsheets (.xls) display OK.
Just add the extensions to the ActiveX Document plugin's list and it should work.
(Preferences, Plugins, Configure)
If it doesn't work you need to install (register) the ActiveX DLL which comes with OpenOffice.