Stephen from Pocket Lint had a look at Toshiba's ultra-compact Libretto U100 notebook. Here's a snip from his review:

Toshiba has been designing and manufacturing notebooks for 20 years, starting with the T110 in 1985, which weighed in at over 7kg, had a battery life of 60 minutes and green LCD screen. To celebrate, the company has chosen to reinstate one of its older ultraportable lines, in the form of the Toshiba Libretto U100. Initially there will be this one model but if it proves popular, the line will be expanded..



Link: Pocket Lint