Hi
I have uninstalled BitDefender Internet Security 2013 and Installed Norton Internet Security 2013 last Sunday since then their are no more freezes and the start button works fine.
But one very tiny issue in Classic Shell 3.65: In the start menu Network Connections is missing, open Classics Start Menu Settings tab to Special Items then scroll down to Network Connections and then tick Display as a menu then click ok. 2 screenshots attached.
Ivo give me 1 more week to keep on testing the start button.
Regards
Gaby