Problems with using filters

[discomute]

Hey guys I am using google analytics and I have this error that is so frustrating I am about to head-asplode

All I want to do is get a report from our international traffic. So I have to exclude Australia.

I have googled this and looked at many help pages and they all say the same thing

Add a filter > Custom Filter > Exclude > Visitor Country > Australia

Then I select the website profile and save changes.

This has absolutely no effect on the web reports whatsoever. Australia still gets reported as if I had never set up the filter.

What am I doing wrong? Is it a problem with how I set the filter up? Or do I need to view the report through the filter (if so how?)? Or can't you view backdated changes like this?

Any help would be great!