You may want to hold off on loading service pack 3 on your RMS machines:
Microsoft had pulled the mass download last week when it uncovered an incompatibility issue between SP3 and its point-of-sale application, Dynamics Retail Management System (RMS). The issue in question ? and they've yet to specify what the problem is ? also affects Windows Vista SP1. Redmond is still apparently knuckling down over the issue. Customers with RMS are being advised against installing either service pack until the error is resolved. In the meantime, it has deployed a band-aide filter for the automatic Windows Update to block RMS users from getting it. Microsoft said a permanent fix is currently in beta and will be available later this month. ®