"With the X600 weighing 2.1kg, MSI has either failed dismally in its quest or there are some gargantuan birds strutting around its offices."

Kevin !

What? Compared to the Macbook Air? Why do you always give Apple a break when it comes to pricing? This has greater performance in nearly every benchmark and costs half as much as a Macbook Air, yet you had your wet tongue in the earhole of Apple for the Air.

I've come across this on a desktop with 512Mb - that one shipped with Vista....

If manufacturers don't want you to upgrade memory without voiding the warentee they should put this on the box....personally if I accidentally bought a machine with this 'feature' it would be winging its way back to PC World* as not fit for purpose. Its the same as Ford refusing to let me fit an air freshner...

*not really