We have come across an issue twice in the last two weeks.  Our inventory account has the correct value in the GL.  However, when we run the Stock Valuation Report, we have found a couple of inventory parts that have the incorrect quantities.  When looking at the available stock, there is a quantity showing allocated.  We look into the allocation for the product and find that there are none.  We cannot figure out what is causing the inventory balance to disagree.  We can do a stock resync and things are back to normal.  We would like to know how we are getting incorrect inventory numbers.  Has anyone had this happen?