Cablemodem por USB y entorno gráfico colgado

[Tximis]

Buenas, he revisado los logs y no veo nada raro. Los copio aquí por si vosotros veis algo raro:

/var/log/messages, el cacho desde que lanzo "dhclient" (para pedir la dirección IP por DHCP) y entro a GNOME:

Feb 4 17:58:13 localhost dhclient: Internet Software Consortium DHCP Client V3.0pl1
Feb 4 17:58:13 localhost dhclient: Copyright 1995-2001 Internet Software Consortium.
Feb 4 17:58:13 localhost dhclient: All rights reserved.
Feb 4 17:58:13 localhost dhclient: For info, please visit http://www.isc.org/products/DHCP
Feb 4 17:58:13 localhost dhclient:
Feb 4 17:58:16 localhost dhclient: Listening on LPF/eth0/00:0a:73:fc:2a:96
Feb 4 17:58:16 localhost dhclient: Sending on LPF/eth0/00:0a:73:fc:2a:96
Feb 4 17:58:16 localhost dhclient: Listening on LPF/lo/
Feb 4 17:58:16 localhost dhclient: Sending on LPF/lo/
Feb 4 17:58:16 localhost dhclient: Sending on Socket/fallback
Feb 4 17:58:18 localhost dhclient: DHCPREQUEST on eth0 to 255.255.255.255 port 67
Feb 4 17:58:18 localhost dhclient: DHCPACK from 10.72.64.1
Feb 4 17:58:18 localhost dhclient: bound to xx.xx.xx.xx -- renewal in 25527 seconds.
Feb 4 17:58:19 localhost dhclient: DHCPDISCOVER on lo to 255.255.255.255 port 67 interval 7
feb 4 17:58:25 localhost gdm(pam_unix)[2323]: session opened for user root by (uid=0)
Feb 4 17:58:26 localhost dhclient: DHCPDISCOVER on lo to 255.255.255.255 port 67 interval 14
feb 4 17:58:27 localhost gconfd (root-2500): comenzando (versión 2.2.0), pid 2500 usuario 'root'
feb 4 17:58:28 localhost gconfd (root-2500): La dirección "xml:readonly:/etc/gconf/gconf.xml.mandatory" resuelve una fuente de lectura en la posición 0
feb 4 17:58:28 localhost gconfd (root-2500): La dirección "xml:readwrite:/root/.gconf" resuelve una fuente de escritura en la posición 1
feb 4 17:58:28 localhost gconfd (root-2500): La dirección "xml:readonly:/etc/gconf/gconf.xml.defaults" resuelve una fuente de lectura en la posición 2
Feb 4 17:58:40 localhost dhclient: DHCPDISCOVER on lo to 255.255.255.255 port 67 interval 20
Feb 4 17:58:52 localhost login(pam_unix)[2275]: session opened for user root by LOGIN(uid=0)
Feb 4 17:58:52 localhost -- root[2275]: ROOT LOGIN ON tty2
Feb 4 17:59:00 localhost dhclient: DHCPDISCOVER on lo to 255.255.255.255 port 67 interval 9
Feb 4 17:59:09 localhost dhclient: DHCPDISCOVER on lo to 255.255.255.255 port 67 interval 11

Aquí el archivo /var/log/XFree86.0.log:

(II) XINPUT: Adding extended input device "Generic Mouse" (type: MOUSE)
(II) XINPUT: Adding extended input device "Configured Mouse" (type: MOUSE)
(II) Server_Terminate keybinding not found
(II) Configured Mouse: ps2EnableDataReporting: succeeded
(II) Generic Mouse: ps2EnableDataReporting: succeeded
Warning: font renderer for ".pcf" already registered at priority 0
Warning: font renderer for ".pcf.Z" already registered at priority 0
Warning: font renderer for ".pcf.gz" already registered at priority 0
Warning: font renderer for ".snf" already registered at priority 0
Warning: font renderer for ".snf.Z" already registered at priority 0
Warning: font renderer for ".snf.gz" already registered at priority 0
Warning: font renderer for ".bdf" already registered at priority 0
Warning: font renderer for ".bdf.Z" already registered at priority 0
Warning: font renderer for ".bdf.gz" already registered at priority 0
Warning: font renderer for ".pmf" already registered at priority 0
(II) Open APM successful
(--) SAVAGE(0): Chose mode 118 at 60Hz.
(II) Generic Mouse: ps2EnableDataReporting: succeeded
(II) Configured Mouse: ps2EnableDataReporting: succeeded

Voy a seguir buscando en Google los errores que tiran los logs, para ver si soluciono algo. Un saludo y muchas gracias