kmail and firefox cache BUG

[Ze]

I use mandrake10.0 with kde3.2 
Im using Firefox as the default browser.
So when in kmail and i click in a url, it opens firefox, but what appears in 
the location bar is for example /var/tmp/kdecache-mmodem/krun/5791.0. , 
intead of appearing the URL.
Already speak with firefox developers and i could saw that the fault is of 
kmail and not firefox.
I did a script to see what kmail was sending to firefox and saw that kmail 
sends cache things instead of the URL.

How can this be fixed?
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