[doveman2]

Yes, I experience that as well except I'm using MythTV as the pvr backend. I'm pretty sure it's been that way for at least all of the 17/Krypton builds and perhaps back into the 16/Jarvis builds as well.

I don't have this problem with tvh and Jarvis (I'll have to check exact version later) but I did set it to buffer more than normal, so it takes several seconds to start when I select a channel.