Real transparent background: We haven't found a way todo this yet. All the widgets that have transparent background are no WRT widgets.
There is no automatic detection if you're in a timezone that uses daylight saving time (DST). By default, the widget assumes that you're in a timezone that has a 1h DST. If this is not the case, please change the "enable Daylight Saving" setting within the widget.
"all day" events with location information won't be displayed with location information. This is yet another bug in Nokia's firmware, please wait for a patch.