How Can I Delete Multiple (all) Dvr Recordings?

My DVR inexplicably has saved literally hundreds of instances of the same 6-7 PM, 2/5/10 program. None is playable (they seem to be "empty" or otherwise unusable), yet my total DVR capacity is suspiciously at 97% capacity. I would like to wipe clean all my existing DVR recordings and get back to 0% used capacity.

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Using myDVR Manager, how do I change my series priority to make sure all of the episodes are recorded?
Using myDVR Manager, how do I change my series priority to make sure all of... time. As you schedule new series' to record on your DVR, they will automatically go to the bottom of... series top priority when scheduling) and only record if there are not two other programs being recorded at that time. If you would like...Update Priority . You may also modify your series recording settings or delete a series ...
Features of myDVR Manager on the Comcast mobile Application
... the Comcast mobile Application lets you do the following: Access and manage lists of scheduled recordings Switch between more than one DVR Schedule recordings for and Episode, Program, or Series Cancel/Delete a scheduled recording Schedule recordings with all recording options (e.g. recording priority) Quick Record and Quick Cancel from the ...
General Support
...Manager provides you with the ability to manage your DVR recordings remotely, using any computer connected to ...local service center may not be able to exchange multiple set-top boxes. *Note: This... set-top boxes. Motorola HD DVRs DCT 6208; DCT 6208R HD Analog... Card Host DCH 6416 DCX3400 Pace DVRs and Set-Top Boxes TDC577X Vegas SD All Digital Dual Tuner DVR M Card Host TDC575D Vegas SD All...