no response after gnome welcome image
 

when i use startx to gnome,
it's no response after welcome image.

how i can find the reason, and fix it?

Run this command:

nano ~/.xsession

Copy everything, press Ctrl-X, return to this site and post it.
If there is nothing in ~/.xsession try ~/.xinitrc.

it's seem that gnome's conf file has some problem in my system.
i just delete them and that's ok now.
thank you for you advice