[R] X11 fonts and Ubuntu

[Patrick Giraudoux]

Hi,

I am moving from Windows XP to Ubuntu 6.10 and installed R 2.4.0. When I 
run eg plot.lm  (things work fine with plot.default - eg 
plot(rnorm(30),rnorm(30)))

plot(lmobject)

I can get the first plot and then this message:

Hit <Return> to see next plot:
Error in text.default(x, y, labels.id[ind],cex=cex, xpd=TRUE, :
    could not find any X11 fonts
Check that the Font Path is correct

I have googled through the R-help list and it seems that such troubles 
already occured sometimes (see link below and threads)

http://lists.freebsd.org/pipermail/freebsd-ports/2005-June/024091.html
http://tolstoy.newcastle.edu.au/R/help/06/03/23864.html

but did not find solution. Some messages claim it is a X11 problem (not 
R) some others suggest it may come from R. Some also mention that UTF-8 
may be a problem (though I don't have specific message on this from R). 
I have re-installed x11-common via the Synaptic package manager (so I 
suppose X11 is well installed) without improvement. I have checked 
/etc/X11/ xorg.conf

Section "Files"
    FontPath "/usr/share/X11/fonts/misc"
    FontPath "/usr/share/X11/fonts/100dpi/:unscaled"
    FontPath "/usr/share/X11/fonts/75dpi/:unscaled"
    FontPath "/usr/share/X11/fonts/Type1"
    FontPath "/usr/share/X11/fonts/100dpi"
    FontPath "/usr/share/X11/fonts/75dpi"
    FontPath "/usr/share/fonts/X11/misc"
    FontPath "/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType"
Endsection

but cannot identify where the problem is actually thus no remedy.

Any idea?