Updated my blog post that has info and screenshots from every version of Mac OS X from Public Beta - 10.8 Cool to see the difference Mac OS X has gone through over the years http://twistedmac.com/index.php/mac-os-x-over-the-years . ---------- I must say, after having gone through and test Mountain Lion I like it. I don't find it near as buggy as most Developer Previews are when first released. So far I've tested AD, OD & Messages. Active Directory - worked great. Bound the computer and logged in with an AD account and mounted my network share. Everything seems to be running smooth. Open Directory - Bound it to OS X 10.7.3 Open Directory Server and worked great. Anything I adjust so far takes effect on the new 10.8 client. iMessges - works great as well. As the OS is linked to my iCloud account I was able to iMessage anyone on my phone from iMessages on the laptop by using a persons mobile phone number of email address.