[SDL] Error: Unable to open a console terminal

[Xarvh Admin]

> Is your DISPLAY environment variable set?
Yes:
`DISPLAY=:0.0`

>  What's the output of xdpyinfo
> from the terminal you are trying to run the program from?
Quite large... i'm putting it here:

http://freeweb.lombardiacom.it/xarvh/xdpyinfo.txt

It worked when i was using SDL 1.2.4, but i had to reinstall both SDL and 
window manager (however is unlikely that the xfree86 config has been touched).

Thank you!
Francesco Orsenigo