The first, if you know, network-manager knows about many specifics of many Wi-Fi modules tricks, for example for my RaLink card (that cannot be changed in my notebook) - it's needed to be downed and after this up with new network settings. So, I'm using many wireless networks (office, pubs, train stations, passenger terminals, ...) - but other network managers can't operates with my card, doing many stuff manually isn't sounds good for me - I'm lazy...
If you are using Gnome you know the base minus of it - it's a default window manager - metacity, this wm cannot remember anything about windows position, size and other varios attributes.
Also, on other side there are tiled window managers, but its takes many time to make a sense on configs and features.
The better way is to use my old friend - Window Maker wm, there are simple setting up, and it has many look and features that can be offered in tiled managers.
It can be looks like on my screenshot -
So, but Gnome feature - changing window manager is deprecated and all settings made over a gconf was failed. Solution was found - I've create ~/.gnomerc file and add the following line -
export WINDOW_MANAGER=wmakerThis line helps for it.
Also you can change some things like abort nautilus loading etc ... It will safe your memory and will turn off features for idiots.