I have regenerated tonight and the problem already seen with date type fields (date & datetime) stills occurs to me.
Here is how the toolbar is displayed:



Here is the date display (normally it should be a form)


I am running ubuntu linux 12.04 with firefox 14.0.1
Let me know.

Can you active the php errors please ?

This problem has vanished in my last regeneration. Perhaps because this time I've setup timespamp unix format (linux user). Don't know. Anyway it works.