In Reply to: Passport validity - if a passport is posted by joeyrobby on Friday, 14. October 2011 at 16:14 Bali Time:
After Googling (what a wonderful tool that is!) I found this information from the site of the Indonesian Embassy in Canberra:
Passport must be valid for at least 6 (six) months after the date of entry.
Hopefully the information is of some use. I am sure other nationalities than Australian may find similar information on official sites for the Indonesian governement.