This is a Mac-specific problem, and you should probably have posted it on a
Mac-specific ng, but I might be able to help anyhow.
See here for gateway to Mac-specific ngs:
<
http://www.microsoft.com/mac/community/community.aspx?pid=newsgroups>
Re your problem:
I think that's caused by a corrupt preferences file. See here for how to
test it.
word.mvps.org/MacWordNew/DamagedPrefs.htm
(hit refresh a few times in Safari, or use a different browser)
If it's only happening on certain files, the language might not be properly
assigned. You have to assign a language to the text for Word to spellcheck
it.
To test this, with the cursor in a word that isn't being checked, go to
Tools | Language and see what comes up selected.
To assign a language, select all text and use Tools | Language.
Reloaded the whole Office app folder to ibook and checked on another
computer but No Joy!
I don't know what this means but it sounds unlikely to be a good procedure
to fix anything. In fact, it sounds as though you probably screwed up your
installation by doing an incomplete reinstallation, see here if the above
does not work:
word.mvps.org/MacWordNew/removeReinstall.htm
(hit refresh a few times in Safari, or use a different browser)
If none of these work or you have follow-up questions, *please* post on the
MacWord group from the first link I gave you--this group has far too much
traffic and you will get a faster answer over there. You should also be able
to find the MacWord group somewhere in the MS web interface, I just don't
know where, exactly.