gnome porblem with 12.4

[abdorefky]

after i updated ubuntu 11.10 to 12.4 ,, system testing is forcing
system to log out and some other things do such things :
latest problem : i can't install gnome

BTW system testing still crashing my system :
i hope to know if there is any diagnose tool for gnome or the ubuntu system files

[abdorefky]

I am the only one who have this problem ?

[abdorefky]

hmmm

[coffeecat]

after i updated ubuntu 11.10 to 12.4 ,, system testing is forcing
system to log out and some other things do such things :
latest problem : i can't install gnome

If you originally installed Ubuntu (rather than Kubuntu, Xubuntu or Lubuntu) you already have gnome. The problem in your screenshot indicates a dependency one. There is probably a problem with your sources. Please open a terminal and post the output of these two commands:

cat /etc/apt/sources.list
ls /etc/apt/sources.list.d/

You can paste the output into your post by highlighting it with the mouse and right-click -> copy. The first command will produce quite a lot of text so please be sure to copy and paste all of it.