Here are the links for the CAT outage, please feel free to post more links as you find more news.
ET: http://economictimes.indiatimes.com/articleshow/5278923.cms
Zee News: http://www.zeenews.com/news582913.html
Meri news: http://www.mynews.in/News/CAT_exam_cancelled_in_9_cities_as_server_crashed_N31312.html
Have a chat with people on the forums, direct from the source : https://testing.pagalguy.com/discussions/cat-servers-crash-exam-rescheduled-25046755
Update: Soumitra Roy, Managing Director, India, Prometric says “The CAT 2009 has certainly not been cancelled in any of the test centres. In fact, thousands of tests were successfully delivered in hundreds of test centres throughout India. To accommodate the maximum number of candidates, Prometric and IIMs delayed the start of the morning session by about half an hour. As a result of isolated technical issues some candidates are being rescheduled and provided a new appointment via email and SMS.”