Problem with installing two RealTek net adapters

[solarix]

hi,
I had a NAT server with ubuntu breezy, 2.6.12-10-386 kernel, it had
only one net adapter of RealTek 8139C and worked very well. I
installed another RealTek 8139D on, but it could not work. I found the
server would work well with either of them on, but with both on would
fail to find the new one(8139C).

following are part of my dmesg:
[4294679.321000] 8139too Fast Ethernet driver 0.9.27
[4294679.321000] PCI: Enabling device 0000:00:09.0 (0004 -> 0007)
[4294679.321000] ACPI: PCI Interrupt 0000:00:09.0[A] -> Link [LNKD] ->
GSI 10 (evel, low) -> IRQ 10
[4294679.321000] eth0: RealTek RTL8139 at 0xd000, 00:14:78:36:17:86, IRQ 10
[4294679.321000] eth0:  Identified 8139 chip type 'RTL-8100B/8139D'
[4294679.321000] PCI: Enabling device 0000:00:0b.0 (0004 -> 0007)
[4294679.323000] ACPI: PCI Interrupt Link [LNKB] enabled at IRQ 11
[4294679.323000] PCI: setting IRQ 11 as level-triggered
[4294679.323000] ACPI: PCI Interrupt 0000:00:0b.0[A] -> Link [LNKB] ->
GSI 11 (evel, low) -> IRQ 11
[4294679.324000] eth1: RealTek RTL8139 at 0xb800, 00:e0:4c:39:01:73, IRQ 11
[4294679.324000] eth1:  Identified 8139 chip type 'RTL-8139C'
[4294679.334000] 8139cp: 10/100 PCI Ethernet driver v1.2 (Mar 22, 2004)


When I typed "ifconfig eth0 up", I found eth0 became 8139C. I typed
"ifconfig eth1", it told me "No such device". I googled, someone said
there would be some troubles with two RealTek net adapters, but he
didn't tell the solution.

Could anyone help me with this problem? thanks.