Since the upgrade to 5.0.7, it appears that I can not NOT have start and end dates on tasks that I edit. The quick task create bar in the task view works as expected and quickly creates a task in the current task folder. As soon as I open any task however, it will fill in the start and end date (if none is already selected) with the current date. Attempting to delete those fields and saving brings up the error

"Cannot save. You have errors that must be corrected:
Invalid dates (make sure end date/time is after start date/time)."

The same error occurs if you create a new task and attempt to save it without start and end dates.

This is occurring with current IE7, Firefox 2.current and Firefox 3.current.

Are others seeing this and/or have I missed the bug on the matter?