[mythtv] Interesting hard drive usage with CVS from Friday....

[William]

> I am seeing an interesting problem with the cvs version of 
> mythtv. After watching live tv for a while the hard drive 
> usage goes way up. At the start of a tv session the drive 
> flashes about 1 time per second for a short flash. After 
> watching tv for a while (30 minutes or so) the hard drive 
> light starts flashing almost solidly on. I am still able to 
> watch the show, no problem but the drive usage goes way up.  
> Exiting live tv mode instantly stops the activity. 
> 
Additional testing indicates that the problem starts when the ringbuffer
gets full. I suspect that the issue is in deleting the old part of the
buffer to make room for the new.