QB should be able to fix it and as this is a very critical part of QB.  very frustrating to call them and they recommend what axcactly you've done.  makes me wonder if QB even seen the issue?   my fix for this is, i quit looking for fix from qb, i made my own:  made a batch script which stops qb services then backedup and zip up the company file and restart the qb services... i've been having no issues...