Mouse does not work inside a document

I have a customer that has somehow lost PARTIAL mouse control.
The mouse works  fine outside the document on the toolbar or on the desktop but inside a word document or outlook the cursor does not work, yo can only move around the document with the arrow keys!, Anyone know what they could have done?
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You can try this:
1)Close Word and Outlook
2) Open "regedit" (Windows Key + 'R' then type "regedit" and press enter)
3) Navigate to: HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Word\
4) Right click and delete the sub-entry "Data"
That will reset some settings and has fixed the problem for me in the past.
Joanne M. OrzechManager, Document Services CenterCommented:
Is this just one document, or ALL documents?
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Joanne M. OrzechManager, Document Services CenterCommented:
See the article found here, which describes your problem.  If that is indeed the cause of the problem, then ndewing's suggestion is correct and should resolve it.

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Are you still having a problem or has any thing here fixed it?
InsideviewM.D.Author Commented:
Still not sure which update it was but rolling back to before the last update did the trick
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