Inconsistent timezone handling?

[uranio255]

SmartGWT version: 2.4 LPGL
Browser version: Firefox 4

- All clients accesing our application are always within the same timezone.
- The application store dates in UTC in the database.
- All these UTC datetimes are sent from the server to clients using the following format: yyyy-MM-dd'T'HH:mm:ss+00:00 (e.g: 2011-04-19T22:00:00+00:00).
- My application starts like:

DateUtil.setDefaultDisplayTimezone("+00:00");
DateUtil.setAdjustForDST(false);

- Form controls and ListGrids are populated with UTC datetimes properly. They came in UTC and so they still appear like that on screen.

Here is the issue:
- Absolutely all our clients are within one single timezone (GMT+02:00).
- When I hit save on any form with datetime controls all datetimes are sent to our server rolled back 2 hours.

Taking into account that:

- SmartGWT can clearly see that all receiving datetimes are UTC (I attach +00:00 at the end of all of them).
- I instructed SmartGWT that all dates should be shown in UTC (DateUtil.setDefaultDisplayTimezone("+00:00")), hence, SmartGWT does not alter them in anyway while populating controls. This is completely correct.

... then why does it incorrectly rollback all datetimes 2 hours before sending them to the server when they are already UTC? Why does it seem to take into account the client browser´s timezone?

[Isomorphic]

Please clarify:

1) show all the code including whatever code you're using to check / serialize the values

2) if you're claiming some built-in DataSource operation or similar is encoding in the wrong timezone, show exactly what you see being sent (eg from Firebug).