ghostly graphic-links

Hi !

  I've got a mysterious problem,
  because there are  too many graph-links (dead links) on the trend-page for my SPLITNCV-Graphs ..

... see  http://desy.de/~flemming/afss3.png
(The first afss3-graph is right and pretty but follows of ghostly links)

Im running
[xymon01] /usr/lib/xymon/server/bin # ./xymongen --version
xymongen version 4.3.4

but this problem was already there with older versions :-(

I startet with a normal NVC-method and there was everything ok

i've got one afss.rrd and could show every of my 20 value in a seperate graph on the trend-page ... but now i want to use the SPLITNCV-Method to have for each value one seperate rrd, so i can compare each value for several servers
.. this also works but unfortunaltey ony with these addittional ghostly/dead links :-(

Has somebody an idea what's going wrong ?

thanks & Cheers

 	martin