firefox 1.0.7-0ubuntu0.1_i386 update error

[BerlinOliver]

I had the same problem with updating firefox. then i completely removed
firefox, uncommented backports  and installed the new version. But it
will not start. If I try it in a shell nothing happens. and if I start
it from kde it takes long to open a window and it fails. (no new
windows is opening)

If I run the command as root in a shell I get the following output.  



root at venusfalle:~ # mozilla-firefox

You should really not run firefox through sudo WITHOUT the -H option.

Anyway, I'll do as if you did use the -H option.

Xlib: connection to ":0.0" refused by server

Xlib: No protocol specified





(firefox-bin:11159): Gtk-WARNING **: cannot open display:

root at venusfalle:~ #



Does anybody have an idea?`Can anybody help me please?


-- 
BerlinOliver