@Gurgelmeyer - One difference that I notice in v6... On a fresh install of Windows 2000 SP4 with Rollup1 from Microsoft slipstreamed with /integrate (i know its not exactly slipstreamed, but still....) the Rollup1 update still appears as not installed in v6 but it is 7MB instead of 30+... I have no idea what this means, just pointing it out