Reuters:
Three weeks of imaging data by the agency’s satellites from early 2001 showed more than 10 individual giant waves around the globe of more than 25 metres in height. Previously, scientists believed that such large waves occurred only once every 10,000 years.
That link is buggered, found it here too.
http://www.abc.net.au/news/newsitems/200407/s1161295.htm
Thanks – had to fix the image, too.