This bug is opened to addresss the timezone changes for Western Australia from java side.
Fujitsu Australia is looking for an official statement/document/workaround/patch for java from Sun.

Details on the legisltation changes at:
http://www.parliament.wa.gov.au/parliament/bills.nsf/9A1B183144403DA54825721200088DF1/$File/Bill175-1B.pdf

http://www.theaustralian.news.com.au/story/0,20867,20747523-5006789,00.html

changes that come into effect is as below:
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From the hour of 2 a.m. on 3 December 2006 until the hour of 2 a.m. on 25 March 2007 summer time shall, throughout the State, be one hour in advance of standard time (GMT+8) and shall be observed accordingly.
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