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I tried this solution with 2 trackers but it doesn't work.
It always brings the data (and apparently the detectors) of 
the first tracker accessed.  When you point the browser to 
the second tracker it brings the data of the first one but the 
html of the second one.

I copied mp_roundup.py on both trackers and in httpd.conf I 
adapted two sections of your sample.

Any ideas?

By the way... It's d@mn fast!