A quick tip (learnt the hard way!) if you are using a USB soundcard (E.G. Soundblaster Extigy) and a USB capture card (E.G. Hauppauge WinTV-PVR USB2) even if they are both USB2 (and should therefore have the bandwidth to cope) do not connect them to the same controller on your PC. Most PC's now have 4 (or more) USB ports on the back, try using different ports if you experience poor/jumpy reception in My TV. I would guess this tip also applies to connecting the hardware to a USB HUB, but I haven't tried this myself.