The Pew Research Center realeased the results of a a survey last year:
Islamic Extremism: Common Concern for Muslim and Western Publics
Support for Terror Wanes Among Muslim Publics
Among the results :
Support for acts of terrorism in defense of Islam has declined dramatically among Muslims in most predominantly Muslim countries surveyed, although support has risen in Jordan. And while support for suicide bombings against Americans and other Westerners in Iraq remains at higher levels, it too has declined substantially among Muslim publics in all four countries with trend comparisons available, including Jordan.
In Turkey support for suicide bombing and other forms of violence against civilian targets in order to defend Islam from its enemies was already low compared to other majority-Muslim publics and has remained stable with just 14% of the public saying such actions are often or sometimes justified. In Indonesia only 15% now see terrorism as justified at least sometimes, down from 27% in summer 2002. In Pakistan, 25% now take that view, also a substantial decline from the 41% level to which support had risen in March 2004, while iin Morocco support has fallen dramatically, from 40% to 13% over the last year.
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Concerns over Islamic extremism, extensive in the West even before this month's terrorist attacks in London, are shared to a considerable degree by the publics in several predominantly Muslim nations surveyed. Nearly three-quarters of Moroccans and roughly half of those in Pakistan, Turkey and Indonesia see Islamic extremism as a threat to their countries. At the same time, most Muslim publics are expressing less support for terrorism than in the past. Confidence in Osama bin Laden has declined markedly in some countries and fewer believe suicide bombings that target civilians are justified in the defense of Islam.
http://pewglobal.org/reports/display.php?ReportID=248
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There are some troubling results as well, which if taken as a whole is reason for the US and western allies to better understand the range of perceptions and concerns among muslims around the world.
Most of all, we should avoid stereotypes and generalizations about the "face of Islam" and majority support for terrorism among the muslim populations.