Things are progressing well here despite the odd glitch. Part of the problem is that, as a Windows "power user", I get a little frustrated when I can't get OS X to do exactly what I want yesterday
I installed the Apple supplied app for Windows to allow my MacBook Air to use a DVD drive on the Windows machine. Not the smartest app in the world as it only offers use of the first DVD drive it finds and that was a problem for me which was quickly sorted this morning by getting around to swapping out the failed DVD drive for a replacement (the controller on that particular DVD drive failed a few days ago). Once done I was able to install the Canon supplied software that came with both my EOS 5D Mark II and my PowerShot G10. G10 files are normally downloaded by a program called CameraWindow but when I connected the G10 via a USB cable and switched it on CameraWindow popped up a message saying it had "failed to initialize" and shut down. A quick Google elicited that there's an incompatibility with OS X 10.6 - not a good start.
However both ImageBrowser and iPhoto can see the G10 and download photos so I do have options.
Much better news on the EOS 5D Mark II front in that, as I've been used to under Windows 7, connecting the camera via a USB cable and switching it on brings up Canon's EOS Utility from which one can download photos and then have Canon's DPP fire up automatically for inspection and optional post-processing. Even better news was that, on an admittedly very brief test, the EOS Utility is fully capable of controlling the 5D Mark II for a spot of tethered shooting. This is one of the main reasons I bought the MacBook Air and it was a great relief to see this all working after the CameraWindow fiasco.
On a more general note, now that I've configured the Dock to auto-hide I'm much happier. The 13" Air has generous 1440 by 900 native resolution but I do find I want all of that vertical resolution available when an application window is maximised. Too used to 1280 pixels on the main PC, I suppose.
The screen on the Air is excellent with even backlighting and all those pixels crammed into those 13.3 diagonal inches make it look incredible sharp. I don't plan to do much, if any, photo-editing on the Air but if I had to I don't think it'd be a problem.
In reply to a couple of comments above (for which Thank You) I use OpenOffice on the W7 PC for everything except email for which I use Outlook 2003. Hence my decision to use OpenOffice on the Mac. Email is not
something I want to use the Mac for, ever!
I'm still way down the learning curve in coming to grips with OS X but I know it will do everything I want it to and, for those who like its way of presenting applications and data to a user, it is capable of far more. So far as the piece of hardware known as a "MacBook Air 13" (2010)" is concerned I can't say enough good things about it. Uber stylish, very quick to start up, light, great battery life, snappy in operation - the list goes on. Obviously there are limits in what one can cram into a machine of this size but, so far, I've nothing but praise for what Apple has accomplished.