This Brainstorm is merged with an other Brainstorm: http://maemo.org/community/brainstorm/view/actions_when_device_is_locked_and_a_event_like_aleart-alarm_or_call_happens/
Please add your solutions there.
Original text of brainstorm:
Some users of n900 have a problem pressing Reject button instead of Answer. Especially when they operate by one hand or in gloves.
In landscape mode everithing is ok, both buttons are split vertically. In portrait mode those buttons are split horizontally so many people accidentally press Reject button.
May be Nokia can split/rearrange Answer and Reject buttons as a small improvement for n900 UI because Nokia do not want to add SWIPE option for incoming events on locked phone.