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@xxxxxxx < > Web: http://www.lct.jussieu.fr/pagesperso/reinh < ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ _______________________________________________ CentOS mailing list CentOS@xxxxxxxxxx http://lists.centos.org/mailman/listinfo/centos