My girlfriend and I both have Macs. I have a iMac and a MBP, she a MBP. Because we are all in the same household, we were going to buy one copy of Mountain Lion and share it. We did this with Lion, and it worked fine. However, Software Update is gone in ML, right? So everything is done through the Mac App Store. Will I have to track down her computer every time there is an update to plug in my password, or is this going to be password-free updates like Lion is? Similar question for iWork. I have the retail version; does anyone know how the updates will work with that?