No issues here running a Macbook Pro with 10.5.2 and all updates since clean installation of Leopard. Also running Parallels build 5584 with Windows XP SP 2 Build 2600 (often swapping between WLG and SYD time zones). However not running Bootcamp
Have not had an issue on this or other macs in home (Macbook & Power Mac G5)
Only device with issues was the Nokia 6120 classic which mistakenly changed time last week!
Mauricio... each time I return at CHC airport I feel the "NZDT Christchurch Special Timewarp Zone.... "