MSN Messenger goes dark By Stefanie Olsen Staff Writer, CNET News.com January 6, 2003, 12:13 PM PT Microsoft's Instant Messenger service went down early Monday, affecting up to 75 million people worldwide who sign on to the service to chat with friends and co-workers. The Redmond, Wash.-based software maker lost much of its power for six hours to the .Net Messenger Service, the backend component that runs all of its IM clients including Windows Messenger and MSN Messenger. Bob Visse, MSN's director of marketing, said that the source of the problem was as yet undetected, but the outage was "fairly...