is there any obviuos ethnocentrism issue in any country esp Malaysia that lead to conflicts and war?

Answer 1

Yes. Malay vs Chinese vs Indigenous. Muslim vs non-Muslim, especially Hindu and Christian.

Ethnic groups:

Malay 50.4%, Chinese 23.7%, Indigenous 11%, Indian 7.1%, others 7.8% (2004 est.)
Religions:

Muslim, Buddhist, Daoist, Hindu, Christian, Sikh; note - in addition, Shamanism is practiced in East Malaysia

Answer 2

ethnocentrism is a major cause of wars nowadays. Bosnia 1990s is one major example, then Kosovo 1998. Sri Lanka now and for much of past 20 years. Somalia. Sierra Leone and Liberia. It's part of the problems in Iraq and in Chechnya too.

Malaysia... mercifully not, ethnicity has been much better handled there than in most countries. Since independence, everybody has become much better off, and 'affirmative action' in favour of the Malays has not prevented other groups from prospering.