Pues vaya si influye, en Windows por ejemplo, si no lo pongo con el driver a Full Duplex, sencillamente no va, no pilla las IP's por el DHCP ni nada, y en Linux otro tanto de lo mismo, solo que en Linux no se deja cambiar a Full Duplex.
Kernel: 2.6.3
Distribución: Tanto MDK10 Official como SuSe 9.1 Personal me hicieron exactamente lo mismo (llevan el mismo kernel creo recordar)
Modelo de Tarjeta: SURECOM EP320X-S Ethernet Adapter 10/100Mb
Extracto de los logs:
[root@localhost root]# dhclient eth0
Internet Software Consortium DHCP Client V3.0.1rc13
Copyright 1995-2002 Internet Software Consortium.
All rights reserved.
For info, please visit
http://www.isc.org/products/DHCP
sit0: unknown hardware address type 776
sit0: unknown hardware address type 776
Listening on LPF/eth0/00:02:44:72:b0:e2
Sending on LPF/eth0/00:02:44:72:b0:e2
Sending on Socket/fallback
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 6
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 11
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 21
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 15
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 8
No DHCPOFFERS received.
No working leases in persistent database – sleeping
-----------------------------------------------------
[root@localhost root]# dhcpcd -d eth0 -t 5
dhcpcd: MAC address = 00:02:44:72:b0:e2
/etc/dhcpc/dhcpcd.exe: line 27: .: filename argument required
.: usage: . Filename
-----------------------------------------------------
[root@SiaSa root]# lspci -v
00:0b.0 Ethernet controller: MYSON Technology Inc SURECOM EP-320X-S 100/10M Ethernet PCI Adapter
Subsystem: Surecom Technology: Unknown device 1320
Flags: bus master, medium devsel, latency 32, IRQ 11
I/O ports at dc00 [size=256]
Memory at d9000000 (32-bit, non-prefetchable) [size=1K]
Expansion ROM at <unassigned> [disabled] [size=64K]
Capabilities: [88] Power Management version 2
--------------------------------------------------------
[root@SiaSa root]# lsmod
Module Size Used by
isofs 33912 1
zlib_inflate 22656 1 isofs
udf 94660 0
lp 12200 0
parport_pc 32832 1
parport 38952 2 lp,parport_pc
snd-seq-midi 8160 0
snd-emu10k1-synth 6816 0
snd-emux-synth 36320 1 snd-emu10k1-synth
snd-seq-virmidi 6912 1 snd-emux-synth
snd-seq-midi-emul 7776 1 snd-emux-synth
snd-seq-oss 31232 0
snd-seq-midi-event 7552 3 snd-seq-midi,snd-seq-virmidi,snd-seq-oss
snd-seq 51024 8 snd-seq-midi,snd-emux-synth,snd-seq-virmidi,snd-seq-midi-emul,snd-seq-oss,snd-seq-midi-event
snd-pcm-oss 51812 0
snd-mixer-oss 17952 1 snd-pcm-oss
snd-emu10k1 85508 2 snd-emu10k1-synth
snd-rawmidi 23616 3 snd-seq-midi,snd-seq-virmidi,snd-emu10k1
snd-pcm 93156 2 snd-pcm-oss,snd-emu10k1
snd-timer 24484 2 snd-seq,snd-pcm
snd-seq-device 8008 7 snd-seq-midi,snd-emu10k1-synth,snd-emux-synth,snd-seq-oss,snd-seq,snd-emu10k1,snd-rawmidi
snd-ac97-codec 58148 1 snd-emu10k1
snd-page-alloc 11972 2 snd-emu10k1,snd-pcm
snd-util-mem 4448 2 snd-emux-synth,snd-emu10k1
snd-hwdep 8928 2 snd-emux-synth,snd-emu10k1
snd 52484 18 snd-seq-midi,snd-emux-synth,snd-seq-virmidi,snd-seq-oss,snd-seq-midi-event,snd-seq,snd-pcm-oss,snd-mixer-oss,snd-emu10k1,snd-rawmidi,snd-pcm,snd-timer,snd-seq-device,snd-ac97-codec,snd-util-mem,snd-hwdep
soundcore 9248 1 snd
hid 53312 0
raw 7616 1
ide-floppy 18752 0
ide-tape 34864 0
ide-cd 40548 1
cdrom 37184 1 ide-cd
floppy 59444 0
ipt_TOS 2240 12
ipt_REJECT 6464 4
ipt_LOG 5312 6
ipt_state 1728 12
ipt_multiport 1856 0
ipt_conntrack 2304 0
iptable_filter 2624 1
iptable_mangle 2624 1
iptable_nat 23116 0
ip_conntrack 31152 3 ipt_state,ipt_conntrack,iptable_nat
ip_tables 16704 9 ipt_TOS,ipt_REJECT,ipt_LOG,ipt_state,ipt_multiport ,ipt_conntrack,iptable_filter,iptable_mangle,iptab le_nat
fealnx 17032 0
mii 4992 1 fealnx
nls_cp850 4736 1
vfat 13760 1
fat 45120 1 vfat
nls_iso8859-15 4480 3
ntfs 85932 1
supermount 37876 3
via-agp 7360 1
agpgart 31016 1 via-agp
uhci-hcd 29104 0
usbcore 99132 4 hid,uhci-hcd
rtc 11576 0
ext3 110408 2
jbd 54328 1 ext3
------------------------------------------------------
[root@SiaSa root]# ifconfig -a
eth0 Link encap:Ethernet HWaddr 00:02:44:72:B0:E2
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:91 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:5460 (5.3 Kb) TX bytes:0 (0.0 b)
Interrupt:11 Base address:0xdc00
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:102 errors:0 dropped:0 overruns:0 frame:0
TX packets:102 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:6846 (6.6 Kb) TX bytes:6846 (6.6 Kb)
-----------------------------------------------------------
A ver si son suficientes estos datos, saludos y gracias por contestar :)