Minor problems (Linux)

Problem1: error message when i tried to connect to the home network and see the shares, error message said "operation not valid or supported" something like that...
Solution: installed gvfs-backends and gvfs-fuse, logged out and then back in, everything's working as it should.

Problem2: for some reason enabling the MATE desktop environment's default compositor (to get fancy shadows under the windows) caused choppy resizing animation on *SOME* applications, yeap, some, e.g Eye of MATE while other applications like pluma or web browser were fine.
Solution: you need to... either install another compositor, e.g compton (i have my compton.conf and a small guide on some post here) or from Compiz panel, choose the resize effect to be something other than live-window-resize.

openbox compositing.

We know that Openbox is plain and sometimes way too minimalistic but if you need a compositor for transparency, shadows or i dont know what else check Compton

# apt-get install compton

create compton.conf in your ~/ (home directory) and place your settings there (i will give my configuration later on)

Compton offers transparency, shadow effects, multiple color of shadows, that's actually nice for dark themes and a really nice fading effect.