I suspect a poorly written Add-In.
See http://word.mvps.org/FAQs/Customization/CheckIfAddinsInstalled.htm for
information on finding out what Add-Ins have been installed and how to
manage them.

Signature
Charles Kenyon
Word New User FAQ & Web Directory: http://addbalance.com/word
Intermediate User's Guide to Microsoft Word (supplemented version of
Microsoft's Legal Users' Guide) http://addbalance.com/usersguide
See also the MVP FAQ: http://word.mvps.org/FAQs/ which is awesome!
My criminal defense site: http://addbalance.com
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from my ignorance and your wisdom.
> My 'insert' drop-down menu is getting longer by the day, filled with blank
> lines that occur initially after the 'Break' and 'Date/Time' bars.
> Any ideas as to what is causing this and how to get rid of the blanks?