I make additional test and I get sadly the result that the debug logging not work after finish xbmc and start xbmc again.
Here the description what i really do:
Start xbmc and switch on the debug logging (the additional line with FreeMem etc. is show in the gui. The I go to the weather page and change the location and start the weather script. The I leave the weather page and finish xbmc
Debug Log from the first part:
http://pastebin.ca/1721714
Then I start xbmc again, the additional line with FreeMem etc. isn't show in the gui, I go to the musik - interpreten page and jump to "The pussycat dolls", start the info dialog and press the refresh button, I get a result list with all entries near "Pussycat Dolls", choose the entry [Interpret] The Pussycat Dolls". I get the dialog info dialog back with all entries and load an alternative fanart. Then I leave the musik page and finish xbmc.
http://pastebin.ca/1721715
I search in both logs for the value "Pussycat", in the first one that is ok that the value isn't available.
But in the second one the value "Pussycat" is also not available, but if the debug logging was alway on after the reboot, the value should show in the log.