I don't think I'm a member of another smf forum so I can't check that.
After installing aspell, php5-pspell spellutils the spell-checking is still not working. If I right-click on a red underlined word I still not see any spell-check dialog in the pop up menu. If I right-click on an empty space beside the text there will be options to spell-check or not and to choose language.
There are also other issues with the right click menu and it's related to the spell-check problem.
Right-clicking in the empty space in the text frame sometimes but not always get the right menu up and this is the menu that always shall come up in a text frame. Right-clicking on a word always get the wrong menu up.
The menus are in Swedish, but I think you will get the point anyway.