Laptops of all sorts are getting thinner, even the decidedly stoic and business-minded ThinkPad series. Hot on the heels of impressing us with its T400 refresh Lenovo is letting slip that it's having thoughts of putting its T500 series on a diet as well, with marketing manager David Critchley indicating that the company wouldn't be opposed to making a super-thin OLED version of the laptop -- "if demand is there." That's not really saying much since just about any company would do the same if they thought they could sell eno