On Sat, 14 May 2011, Itay wrote:
I am experiencing major network problems after the upgrade. Rebooting solves the problem for a short while - after 5 minutes, or so, network will be lost. Based on searches in the internet I pasted below some info that I understand might help to resolve the problem. Please help. Thanks, Itay
So I purged NetworkManager; network works fine. Tested after several reboots and system updates. Thanks to Camaleón and Shell Xu for advice and detailed explanations. See thread for details. Itay