xbmc.log file size is huge

Since upgrading from v12.1 to v12.2 my xbmc.log files are in the GB's. Anywhere from 2.5GB to 25GB.

There are thousands of errors like these. What is causing them and how do I stop please?
http://pastebin.com/embed_js.php?i=U3P9Af1A

Here is everything that preceded the above errors.
http://pastebin.com/embed_js.php?i=xBXvANNv

EDIT:
Log file contents moved to pastebin per Martijn request.