Hi, Im an Australian citizen since last year and I'm going for a holiday to philippines next month for 3 weeks. I don't hhave an Australian passport but my philippine passport will expire on 2015 which I will be using to travel.
I'm just wondering if there will be any problem regarding to my citizenship.
Please help. Thanks a lot

If you are an Australian citizen traveling to and from Australia, you need to travel with an Australian passport.
http://www.immi.gov.au/migrants/residents/return-documents.htm