These crashes are related to McAfee software. Try updating it. If you can't do that it's best to uninstall it. It looks like you already have Avast installed (you generally only need one virus scanner).

that's caused by mcafee family protection software that is running on your system in particular - there should be an update to the program available since half a year which addresses this problem - please contact mcafee's support if you didn't obtain the fix via an automatic update.

By McAfee Software I take it you are referring to SafeEyes (which was acquired by McAfee sometime recently)? They do have one update which I have yet to allow to run as it has a bug in it that they had yet to fix as of the last I checked. (Running the update prevented some updated systems from reconnecting to the Internet! Some bug, eh?) I will check with them again to see if they have addressed this issue.