problems setting mf/dvips mode with tetex 3

Hello,

I have just installed/compiled tetex3 and I'm sure that I have removed 
all traces of the previous tex version (was some tetex 2.x).

Now basically everything is running fine, but now matter what output 
mode I choose with texconfig (as user) or texconfig-sys (as root) I 
always get 600dpi output. When I watch a dvi and xdvi automagically 
generates the bitmaps it will always use the "ljfour" configuration 
(with 600dpi). The next two lines show a (condensed) output from such a 
process:

mktexpk: Running mf-nowin -progname=mf \mode:=ljfour; mag:=1+0/600; 
nonstopmode; input cmex10
...
mktexpk: /var/tmp/texfonts/pk/ljfour/public/cm/cmex10.600pk: 
successfully generated.

As said I have tried several different printer configuration with 
texconfig but mktexpk will always place the bitmaps in 
/var/tmp/texfonts/pk/ljfour with 600dpi.

So, how can I configure TeX? Do you need more informations?

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