[CentOS] extremely slow network connection

[Peter Reinhardt]

Dear Hendrik, Dag and Wealid,
thank you for the replies; to be more specific, here is some more info:
its a DELL Optiplex 755, with a 2 Gb/s onboard card. I did not write this
because the same happens with an additional, elder 3Com card and Fedora 9,
with a 2.6.25 kernel. Monitor and SATA disk work fine.

The computer is on a local switch together with an older computer, which
in turn communicates well at 25 MB/s with all the rest of the world.
At Dell's they propose a hardware support, however not for that model.
Nevertheless they support officially CentOS.
That's why I asked whether anyone had encoutered the same problem already,
and could perhaps provide a solution.

Yours,
   Peter

-- 
      v  v  v  v  v  v  v  v  v  v  v  v  v  v  v  v  v  v  v  v  v
     >  Peter Reinhardt              |   Maître de Conférences     <
     >  Lab. Chimie Théorique        |        (HDR)                <
     >  Université Paris VI          |                             <
     >  4 place Jussieu, case 137    |  Tél.: +33(0)1 44 27 9657   <
     >  F -- 75252 Paris, France     |  Fax.:               4117   <
     >                 email: Peter.Reinhardt at upmc.fr              <
     >       Web: http://www.lct.jussieu.fr/pagesperso/reinh       <
      ^  ^  ^  ^  ^  ^  ^  ^  ^  ^  ^  ^  ^  ^  ^  ^  ^  ^  ^  ^  ^