compiz - Unity doesn't load, no dasher but can see desktop icons and home ubuntu 13.10

I am using ubuntu 13.10 since 8-9 months and I had never faced problem as such. Yesterday I installed some regular updates of ubuntu 13.10 ..everything was working fine but this morning when I started my laptop, I was not able to see unity nor dasher. I followed all the steps mentioned in this link. Unity doesn't load, no Launcher, no Dash appears . But no luck.

I can see my desktop icons. I installed compiz settling manager and when i go and enable unity plugin, screen blinks as it's loading something but nothing turns up.
(unity is already installed, ccsm is also already installed and unity plugin is enabled)

this didnt work I tried other thins like.

sudo dconf reset -f /org/compiz/

setsid unity

rm -rf ~/.compiz-1 ~/.config/compiz-1

and also deleted .Xautority

I also installed

sudo apt-get install --reinstall unity ubuntu-desktop

dconf reset -f /org/compiz/ && unity --reset-icons &disown

but nothing seems to work.