After latest update Unity no longer works

What is the output of :

sudo lshw -C display; uname -a; lsb_release -a

Thanks

*-display
       opis: VGA compatible controller
       proizvod: C61 [GeForce 6100 nForce 420]
       proizvođač: NVIDIA Corporation
       fizički id: d
       info o sabirnici: pci@0000:00:0d.0
       verzija: a2
       širina: 64 bits
       klok: 66MHz
       mogućnosti: pm msi vga_controller bus_master cap_list rom
       konfiguracija: driver=nvidia latency=0
       resursi: irq:22 memorija:fb000000-fbffffff memorija:e0000000-efffffff memorija:fc000000-fcffffff memorija:80000000-8001ffff
Linux alen-RR841AA-ABD-t3720-de 3.11.0-13-generic #20-Ubuntu SMP Wed Oct 23 17:26:33 UTC 2013 i686 athlon i686 GNU/Linux
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 13.10
Release: 13.10
Codename: saucy

Ok so why did you not state your GPU or the fact that you are using Saucy in the initial question? Unity is a plugin for Compiz which needs 3D acceleration to run.

If you make a fresh Ubuntu user is the Unity shell / Compiz usable?

I know Unity need 3D acceleration, my GPU is fully capable for 3D acceleration. After fresh install everything was perfectly fine, I just lost Unity after last update. And when I log in as guest I have normal Unity environment.

I forgot to answer on your last question. When I create new user everything is ok with Unity, it seems only my account is damaged

ok, boot to your own account and press ALT+F2, can you run:

compiz --replace

Does it load ok. We now know the settings in your account are whack. Again, why did you not mention release and GPU?

I tried that before but it's the same. I managed to activate window decorations and open gl because they were disabled, but I can't enable Unity plugin. Also tried unity --replace but it's still the same

I did not mention release and GPU because I didn't know I was supposed to do so

Thanks actionparsnip, that solved my question.

Thank you