To do some urgent work on the following.
Using Date 7.x-2.x-dev and Views 7.x-3.x-dev if you have a node with a multi-value date field and you go to construct a view then the node is duplicated within the view for each date within your multi-value field. We would want a way to make nodes distinct within the view so that they only show up once.
Please only apply if you are an experienced drupal module developer.
You must be willing to commit this work back to the Drupal community for the Date module. Please dont apply if you are not going to do this.