Is storage about to become the hot product category for 2009? Probably not, but you might think so based on all the recent media sever-based NAS devices that are being announced. Just yesterday we told you about Iomega’s Home Media Network Hard Drive, and earlier today we reported on the Linksys by Cisco Media Hub. Now comes word of yet another media serving NAS device; this time the updated Buffalo LinkStation Pro.Two new LinkSation Pro models have just been announced: the 500GB LS-XH500L ($209.99) and the