There are definitely factors outside Australia impacting inflation - and there always have been.
The question is whether imported goods are causing the bulk of inflation in Australia. At the moment I think that they are not - that the bulk of inflation is due to high demand in 2007 rather than the oil price increases of the last 6 months, which haven't really had time to filter through to prices yet.
The RBA agrees that the inflation is largely domestic, and responsive to interest rate rises. We'll see in the next 12 months whether they were right.
Many goods and services have a very small transport component (e.g. most services) and shouldn't be heavily affected by oil prices. So I hope that we won't get to a situation where inflation in Australia is largely driven by oil prices. That would be a difficult situation.