Oh my, Lenovo — what has gotten into you? In case a new netbook — the planet’s first with Nvidia’s Ion technology, at that — wasn’t enough, the company is also introducing three more new machines today. One all-in-one PC is being launched alongside two new notebooks, both of which promise adequate power and great design for a rather affordable price.First off, we’ve got the 20″ desktop shown above, the IdeaCentre C300. For the longest while, those looking for an inexpensive PC were forced to buy the ugliest