Australian federal & state government departments & agencies using Linux on the desktop "to some degree": Australian Nuclear Science & Technology Organisation, N.S.W. Judical Commission, N.S.W. Roads and Traffic Authority & the Victorian Department of Justice.

The same article includes comments by the Red Hat General Manager for Australia & New Zealand to the effect that "... the primary inhibitors to large-scale Linux desktop adoption are Windows applications, especially Excel macros and a perception of a large training cost associated with the move."

Source: Rodney Gedda, "Linux Ready for the Desktop" Computerworld Volume 29, Number 16 (October 18, 2006): 19.