[mythtv] 0.15.1 memory leak?

[Ken Bass]

I'm running 0.15.1 and notice after several days of running, things get
really slow. There appears to be a memory leak somewhere which is causing
swapping after some time (typically 2 days). Is anyone else having this
problem? Has anyone sucessfully run 'valgrind' or a similar memory profiler
on either the front or backend? Lastly, could this be ivtv? 

Any suggestions on debugging this?