Bug#1059911: Solution

The problem explained above is not connected to the network-manager package but the kernel. Using kernel Debian 6.5.10-1~bpo12+1 solves it.

Bug#1059911: System crashes when switching off WiFi

Subject: network-manager: System crashes when switching of WiFi Package: network-manager Version: 1.42.4-1 Severity: normal Dear Maintainer, WiFi is on and connected. I push WiFi button in Gnome panel to switch WiFi off. Or switch of WiFi with keyboard function shortcut. The whole system