One of our clients is having issues with inventory. They will frequently have items with wrong quantities in their system. Theft is most likely not the issue since some of the items missing are large, conspicuous items like mags of wine or 30 packs of beer. Every single time, the amount of sales and the amount incoming will add up, but they will still be short in the store. They are running RMS with SP3.
They are also having issues with suppliers not "sticking" to items. They have to re-add the supplier several times before it stays linked.