I just found out some info from Lenovo Website
http://support.lenovo.com/en_MY/detail.pag...ocID=MIGR-58926ASEAN (Indonesia, Malaysia, Phillippines, Singapore, Thailand, Vietnam)
Customers requiring International Warranty Service in any of the ASEAN countries may be asked to provide one of the following in order to obtain IWS warranty repair service; proof of company identification (company letter, email, business card, company badge with photo ID), proof of purchase (purchase receipt, official order, delivery note, sales memo, or invoice), and/or proof of travel (passport with valid Visa to or from country where product was purchased, or other travel documents).
I guess those who bought US set without any supporting document, i guess the international warranty will be void in Malaysia. Correct me if i am wrong. hmmmm