You can make it much like Light by using JWM or Fluxbox instead of XFCE.
Thanks, I tried both of them.
At this point I have only two questions:
1) is there a way to adjust panel and desktop? - add some icons for example or change wallper(It's really easy with XFCE - right click and here it is...)
2) why 'free' shows that 117000mb of my memory is in use, when I am working in JWM? Logicaly, it should be lower...
Xfce is a bit prettier than this two, but they work significantly faster, and if there is a way to make some adjustments, I think I will switch to one of them, probably to the JWM(It seems more familiar to me. I couldn't imagine, how to work with fluxbox...)
Thanks a lot.
sorry for off-top.