In addition to Singapore, some operational delay of AJCEP in Vietnam & Myanmar is reported in Japanese METI web site.
According to METI, Japanese government was noticed as follows by Vietnam and Myanmar government.
1) Delay of issuing C/O ("Country of Origin") by Vietnam and Myanmar
Due to their internal legal formalities, Vietnam and Myanmar are not able to issue C/O on December 1. At fastest, it will be after middle of December.
2) Preferential tariff in Vietnam Not applied so far
Due to Vietnam's domestic legal formalities, the preferential tariff of AJCEP will be applied only after February 2009. The retrospective refund of duty amount between MFN rate and the preferential tariff is uncertain. It is under consideration by Vietnam government.
(Source: JAPAN METI web site http://www.meti.go.jp/policy/trade_policy/epa/html2/081128_AJ%20ベトナム・ミャンマーに係るアナウンス.pdf )