[photo848]

Here is another log of the blank screen for Live TV channels ->http://pastebin.com/GtVwwLGR

Nothing there, maybe you need to increase your level of debugging for your logs...

I bumped the level to 3, let me know if this isn't what you meant, thx
http://pastebin.com/CpdfSJmU

I happened to notice while looking through the log file that it was turned on to 3 and then changed to 1. I created another file using 2, please try this one if the one above doesn't provide the info you need.
-> https://www.dropbox.com/s/rq4o91geyijds0e/xbmc.log