I have two UMPCs......SOny UX and Fujistu U1010....the U1010 works great as a laptop on the go and is so easy to pack. I can even do some Lightroom and CS3 work if I am really desperate (at a crawl)....
I gave it up for a Sony TZ298..... Core 2 duo, 2 gb ram and 64gbSSD/250gb HD hybrid...... sometimes, you just have to do your post processing before you get home eh?
Oh...btw...the Sony TZ is 2.6lbs and is almost double the size of the FUjitsu