X and Fluxbox :: xf86OpenConsole: Server must be suid root

hallo

i installed xserver xfree86 from debian
the server works if i log in as root

but if i login as dsl i got the message
Fatal server error:
xf86OpenConsole: Server must be suid root

how can help ?
___
49 (WW) The directory "/usr/lib/X11/fonts/Speedo" does not exist.
50 Entry deleted from font path.
51 (WW) The directory "/usr/lib/X11/fonts/100dpi" does not exist.
52 Entry deleted from font path.
53 (**) FontPath set to "unix/:7100,/usr/lib/X11/fonts/misc,/usr/lib/X11/fo nts/75dpi/:unscaled,/usr/lib/X11/fonts/75dpi"
54 (==) RgbPath set to "/usr/X11R6/lib/X11/rgb"
55 (==) ModulePath set to "/usr/X11R6/lib/modules"
56 (WW) xf86ReadBIOS: Failed to open /dev/mem (Permission denied)
57
58 Fatal server error:
59 xf86OpenConsole: Server must be suid root
60
61
62 When reporting a problem related to a server crash, please send
63 the full server output, not just the last messages.
64 This can be found in the log file "/var/log/XFree86.0.log".
65 Please report problems to submit@bugs.debian.org.
66

hello

problem solved

chmod 7777 XFree86

original here.