I have a homemeade application linking a spreadsheet (Excel
2000) to a WORD document.  It is quite a cumbersome
application but works well except for a few strange
glitches.    

Glitch #1.  Periodically, the source for one of my links
will change.  My source document should be c:/close.xls.
sometimes on of the links wil change to a:/close.xls.  Ther
is no consistent pattern to which one that changes.  And it
doesn't change every time I use the application.  I only
know because the a: drive will begin whirring.  I then go
in, find the link, change the source, and re-save the
document.  A week or so later, the whirring noise again and
a coupletely different link will have  changed sources.

Glitch #2.  Some of my links are inside tables.  Does that
present any special challenges?  I ask because I have a few
that won't update unless I update them manually.  All of
these happen to be inside tables.  I have other links that
perform normally in some of the same tables, so I may be
grabbing at straws and the whole tables connection may be
coincidence.  

I can only imagine that this is difficult to convey without
you seeing the actual docs.

Thank for any guidance you can provide.