I just realised that when my wireless connection fails to connect at boot ( which is fairly often with current network manager, about 95% of times) then my time zone settings gets re setted
-- Clock applet consistently displays different timezone after reboot https://bugs.launchpad.net/bugs/226216 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug assignee. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs