I would like a task to show up in the calendar and repeat each day until completed and deleted.
I have tried to create a task with a daily recurrence and have checked the appropriate option for it to show up in the calendar, but it only shows up once. I cannot get the task to reappear the next day even though it remains in the task list and has the proper recurrence options set to recur every day.
I believe that you have to mark the first task as "complete" and then it will create another instance of the task at the next recurrence and this will appear on the calendar. If you just want a bunch of events to show up in your calendar for each day you are better to just use a calendar entry.
Some extra thoughts ... are any fields in your Task greyed out? Are you on a BES (is it a company BlackBerry)? It is possible for your IT department to disable recurring tasks as part of the BB policy (ours does) so you cannot use the native BB tasks application to perform recurring tasks.
What you can do in this case to get around it is use some other tasks application to create your tasks (SlickTasks or BHive tasks) which will allow you to create repeating tasks that do create new instances when they are completed.