Firefox 4 English (Australian) dictionary solution.

Seeing that the developer has expressed no interest in updating the English (Australian) dictionary add on for Firefox 4, the solution for those of us down under, is to install the English (British) dictionary add on.

https://addons.mozilla.org/en-US/firefox/addon/british-english-dictionary/

You mean you fellows down under speak the Queen's English? ;P It always amazes me how many different accents and colloquial words we English speakers have come up with apart from the true British English. ;D

Hehe... Yeah, us 'blokes n' sheilas' down here may have a few unique ways of expressing ourselves, but for 99% of time, 'she'll be right' with the British dictionary not having to see red dotted lines under words such as neighbours, etc.