> <http://www.fc-brett.de/viewtopic.php?t=82955>
> page 2:
> <http://www.fc-brett.de/viewtopic.php?t=82955&postday>
> s=0&postorder=asc&&start=25
> page 3:
> <http://www.fc-brett.de/viewtopic.php?t=82955&postday>
> s=0&postorder=asc&&start=50
> ...
> -*
> +*.gif +*.jpg +*.png +*.tif +*.bmp +*.css
> +/viewtopic.php?t=82955*
That won't work but +*/viewtopic.php?t=82955* would.
Or just  in case the arguments are out of order:
-* +*t=82955*
plus get non-html=checked

Look at your log
<http://www.fc-brett.de/robots.txt> says disallow /*
Override