Funnily enough, I've finally got it working - the laptop installation, that is. I managed to connect to a very strong and fast wifi network here in Japan before Ubuntu froze up, and got a huuuuge update installed. All now seems well, though I'm still a bit pissed off by the difficulties of getting it there. I'm also not convinced at all by Unity, which still seems an exercise in difference for difference's sake and is obviously not guided by intuitive usability! The new Software Centre is a big improvement, and is very (VERY) similar to the Apple App Store for OSX devices. The lack of customising options in Unity is a real letdown (why must the dock be on the left?), and the Dash Home page is a very clunky way of getting to apps.
I'm now using Win 7 Pro 64-bit, Win 8 Dev, Mac OSX Snow Leopard, Ubuntu 11.10 and 10.10 and iOS5 on a regular basis on my collection of gadgets (i4S, iPad2, iMac with Paralleled Win7 VM, Sony Vaio and Dell Studio XPS). in this group, Ubuntu 11.10 comes a solid last! Win7 and OSX are both excellent, and each has strengths the other lacks. iOS5 is a delight until you need to use it like a computer, when the lack of discreet file storage is a real pain. But it's fascinating to have so many options!