I've run into an issue when using the Purchase module in Google Chrome. After you have selected your vendor and you go to the Products selection, in the -Choose Product- field, the items are not in alphabetical order, but seem to placed in the order as they had been entered in the system (e.g. The item on the top is the first item ever entered and the last item on the list is the last item you had entered).
This doesn't happen in IE, but IE doesn't like me.