Aloha Charly,
This is what i could find on the quakes regarding Sumatra
Sumatra March 2007 Quake"
The March 2007 Sumatra earthquakes were two earthquakes which hit near the northern end of Lake Singkarak
in Sumatra (Indonesia) on March 6, 2007 within two hours of each other."
http://en.wikipedia.org/wiki/March_2007_Sumatra_earthquakesSumatra March 2010 Quake"
The 2010 Sumatra Earthquake was a 6.8 magnitude earthquake that struck off the coast of Sumatra (Indonesia)
on March 5, 2010."
http://en.wikipedia.org/wiki/2010_Sumatra_earthquakeThey don't match the date exactly, but they did happen within a range of +/- 200 miles from the 2004 Tsunami.