Clock's additional timezone for Australia/Perth in Oneiric is wrong

[peaolo81]

(I hope this is the right place to post this bug, but maybe should be assigned to "indicator-datetime-service")
I tried to add to my system clock (my real timezone is Italy, GMT+1) an additional timezone tuned on Australia/Perth (I think = GMT+8, am I wrong?). This additional entry is shown wrong, 'cause Perth's time it's displayed equal to UTC. Moreover when I re-set my system timezone to Perth, then it's displayed correctly

Additional info.
ubuntu version: Oneiric Ocelot (11.10)
gnome-panel version: 1:3.2.0-0ubuntu1

I also tried to follow "FindRightPackage" and "DebuggingGNOMEApplets" tutorials, but I couldn't obtain any remarkable result even with gdb