Market tracker IHS iSuppli slashed its 2012 global ultrabook shipment forecast by more than half Monday, though it still expects considerable growth in coming years. The firm's press release said it now expects 10.3 million ultrabook shipments this year, compared with its earlier forecast of 22 million. Some of this reduction was due to accounting, since Intel (INTC) -- which has led the charge for this new type of small laptop computer -- has