i am a zimbra user and getting a bit desesperate.

I have got some issues on my desktop. On my computer (and some of my co-workers not all), for unknown reasons, when using the ajax version of zimbra, the meetings are displayed in wrong timezone. Instead of using the timezone "Europe/Brussel (GMT+1, daylight saving)", the interface is showing everything in "West - Central Africa GMT+1". During summer time, this mean every meeting in calendar is shifted of One hour. For example a collega of mine creates a meeting at 14:00 Brussel time, when i go to my calendar, is see a meeting at 13:00 West - Central Africa time .

If i create a new meeting, let's say between 14:00 and 15:00, my co-workers will show up at 14, some at 15, depending on how zimbra showed them the meeting. That's a real planification nightmare. This is even worse as, when i create a meeting, there is not drop box that allows me to select the timezone, which mean i have to use tricky things to discover what timezone zimbra is using on that desktop computer i'm on and make myself the adjustments to create the correct meeting.

The problem does not occur when i switch to html mode of zimbra. There it properly uses my preferences that states "Europe/Brussel". The problem also exist with mail in ajax, which show the incorrect time of sending. That's a lesser problem to me as i don't care about it

So, to manage my calendar, i always have to switch back to basic mode to ensure i have no issues. This occurs with firefox, opera and internet explorer. I don't know why zimbra thinks i'm in africa My computer is properly setup to Europe/Brussel. I'm using an ubuntu desktop, what do i need to setup so ajax does admit i am in Brussel. ?