Windows 7: Windows Media Center pause buffer

When watching TV on my PC Windows 7 Media Center creates and stores the pause buffer data in ......\Recorded TV\TempRec in several very large files.
These are not my recordings and the files end in ".tmp.sbf".
I was wondering if their was a way to automatically delete within MC or do they just build up to a max? Can they be reduced in size as I don't need to store watched TV program in that large of a buffer.

What are your thoughts?

I just noticed that htese large files dissappear after you reboot your computer.
So it seems on shutdown something deleted them.

Still very interesting files.

In case you are not the Shutdown types (like me), just create a simple batch file to delete these files, then set up a task in Task Scheduler using that batch file. That way the folder will get emptied from time to time.

Thanks for the idea. It seems it already has soemthing built in the scheduler for deleting them.