Hi fellow Lions and Lionesses, Just wanted to report my experience of installing Lion on an 'older' white iMac. Specs as follows: I have done a fresh install by downloading Lion and burning the .dmg file to DVD. Install time was not bad, I was not really keeping track of time, but it felt like around an hour from inserting the DVD and booting off it, to setup completing and arriving at the login screen. It may have been a bit shorter or longer though, as I was doing other things during the install. Freshly installed, Lion felt so much snappier than Snow Leopard right from the off. A roaring start, one might say! I proceeded to install my most used applications: Office 2011 Photoshop CS3 Dreamweaver CS3 Firefox Skype VirtualBox running a VM of Windows XP x64 ESET CyberSecurity I'm pleased to report I have not encountered any issues with above software so far, it all runs smoothly and as I would expect. Do note however, that where possible, the latest version of each app was obtained prior to installing, and in the case of Office 2011 an immediate update to SP1 was carried out. With the speed of Lion it feels like a new machine again. Overall I'm extremely happy with Lion, its new look and features. Well done Apple. If anyone was concerned about installing Lion on an older machine, I'd say go for it.