According to the Council on Foreign Relations’ Global Conflict Tracker, now that there is peace in Colombia, there remain only six civil wars in the world. Five of those are in Islamic nations. Similarly, all four of the current sectarian wars involve Islamic groups, and all five of the ongoing transnational terrorism conflicts involve militant Islamic groups. All told, of the 28 remaining global conflicts of all kinds being tracked by the council, 22 involve an Islamic state or faction...
According to the author of this article in the Boston Globe the reason for this is may be due to the lack of democracy in Islamic countries. One thing he is sure about is that we should immediately dismiss the idea that Islam is inherently more violent.