Whenever I wake my 2012 MBA 13" from sleep, all apps that were accessing the internet before going to sleep crash. This includes the streaming software Zattoo.app, Chrome.app, Firefox.app, etc.
None of the apps that do not access the internet are affected, such as Pages.app, MS Word, etc.
All software is up to date, including the OS that currently is at version 10.8.2.
I have repaired disk permissions.