As I said in channel, this is an issue with Xine not really doing much to ensure that the data gets to the target media directors in time. The whole slave:// streaming method from fifo devices is something of a hack, and while it worked well for the old PVR-150/250/500 devices, it seems to fail miserably with the HD-PVR, we need to find another option that can be realistically used, and if there are any coders who would like to dig in to help, that would be GREAT, as I am currently embroiled between fixing the Telecom system and working on the Weather plugin.
-Thom