I can't seem to add an estimate to my subtasks (using Greenhopper 6.0.1). I don't see any questions about this so I must be doing something wrong. (I see questions about subtasks not summing up to the parent story, so SOMEBODY is able to enter estimates for subtasks.)
I attached screen shot of the planning board detail for one story with subtasks. The "Rem." field is not editable and the edit dialog doesn't give me a place to enter it.
Here is a screenshot:
