and how is this different from the TX series...?
Having been the happy owner of a TX3 all these specifications are familar to me - dimensions, weight, screen size, battery life (consistently 8hrs in my experience), DVD-RW. The only thing that's changed is the processor - TXs only had a core solo, but even with a core duo the processing power is reportedly poor so why bother?.
For surfing the web, emailing, writing documents and watching movies these laptops are great. No-one is going to be photoshopping or video editing on a laptop with an 11.1" screen so processor speed seems moot.
Even the least tech-savvy of users should have figured out by now that you only reboot when you have to, and just Hibernate the rest of the time for a ~20s spinup time. Though it's worth pointing out that hibernation mode takes priority in the BIOS startup, so if you do want to use the quick media mode you will need to shut down properly.
Sadly my employer provided me with a Dell Latitude 420 (i think) which I am compelled to carry around with me. It feels like a brick in comparison.
If I were in the market for a lightweight sub-portable, I'd save my money and go for a TX instead...