Bug 325465

When creating seperate tasks one after the other, hitting `apply' in the task details dialogue window creates duplicate windows. First task does not create a duplicate. Second task creates one duplicate (for a total of two instances of the dialogue window with the same title bar heading and one with <2>). Third task creates two duplicates (total of three with <2> and <3> in the title). And so on. Sometime the duplicates have only the 'general' properties tab, in the bottom half of the dialogue window. Sometimes all tabs appear. 

If you create one task and wait a while, 10 to 20 minutes, to create another there are no duplicates, this seems to happen only if you create the tasks right after each other. 

Reproducible: Always

Steps to Reproduce:
1. Create a task, hit `apply' and then 'ok' 
2. Create another task hit `apply'. 
3. You should have two instances of the task details dialogue window, with the same title and one with <2>.
4. Hit `ok' (or 'cancel') on both. 
5. Create new task, hit `apply'.
6. You should have three instances of the task details dialogue window, with the same title and one with <2> and one with <3>.
7. Repeat - each repetition should create one extra duplicate dialogue window: the n-th created task should have n instances of the dialogue window, all with the same title and each with <n>, <n-1>, <n-2> and so on.
Actual Results:  
When creating a series of todos the n-th task in the series will have n instances of the task details dialogue window, after pressing 'apply' on the initial window. 

Expected Results:  
Hitting `apply' should create the task and leave only the open instance open, do duplicates should be created. 

This only happens when creating todos immediately one after the other. If you wait some time between creating tasks (10 - 20 minutes) this behaviour does not occur, only one instance of the dialogue is open.