Hi I have recently purchased my DV79 which I have hooked up via HDMI cable to a Tosh 32lw48 LCD screen. While watching Oceans 12 today (crap film.. don't buy it !!!) I had several instances of the screen going black for about a second and then coming back again, I tried with another DVD and got the same problem... intermittent black screen blips in the video delivery. I have just checked my software version and it displays the following: 5.17.0 /LT79/02FF Do i need an upgrade ? Any ideas ?