Dell's vanilla Atom N450-based Inspiron Mini 10 just started shipping a couple of months ago, and if you'll recall, we spotted one slip through the FCC's oh-so-vulnerable database with WiMAX built-in. Today at CTIA, Clearwire spilled the news that it'll be providing the service for a 4G-infused version of the netbook come April 1st. What's interesting is that Clearwire only mentions it being for sale "through select Clear retail locations, telesales and