Here is the important part of the log (had to shorten it due to post limitation):
In general, do no post log snippets which you find interesting, always post FULL (debug enabled) log files. Yes, they can be long due to bugs. In which case it's better to cut out similar error/bug entries rather than leaving out system-info/critical parts.
Also, do not post into the forum itself, use websites like pastebin.com, or paste.ubuntu.com (for longer logs). Thx.