Preceeded by / followed by - Same day
The current validation for issues that are linked by preceeded by / followed by issue links is that the start date of the latter cannot be the same as the finish date of the former.
For example this is not possible (Issue B follows Issue A)
Issue A - 2010/01/01 to 2010/01/10
Issue B - 2010/01/10 to 2010/01/20
The following issue must always start on the next day.
This seems rather arbitrary and annoying since we have tasks that may finish mid-day and wish to start on the next days in the afternoon.
For maximum flexibility I would suggest that the validation allows for following task to start on the same day as the last day of the preceding task.