no, ihave installed only one, onboard, and I have Kasda Router connected through USB drive also, but i assume that doesnt matter.
Code:
eth0 Link encap:Ethernet HWaddr 00:E0:18:B0:80:2F
inet addr:192.168.0.3 Bcast:192.168.0.255 Mask:255.255.255.0
BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:231 errors:0 dropped:0 overruns:0 frame:0
TX packets:40 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:23564 (23.0 KiB) TX bytes:7372 (7.1 KiB)
Interrupt:185 Base address:0xa000
eth1 Link encap:Ethernet HWaddr 00:0E:F4:04:D0:58
inet addr:192.168.0.92 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::20e:f4ff:fe04:d058/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1188 errors:0 dropped:0 overruns:0 frame:0
TX packets:1080 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:847101 (827.2 KiB) TX bytes:243701 (237.9 KiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:111 errors:0 dropped:0 overruns:0 frame:0
TX packets:111 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:11275 (11.0 KiB) TX bytes:11275 (11.0 KiB)
sit0 Link encap:IPv6-in-IPv4
NOARP MTU:1480 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
I connect to broadband internet, adsl on Xp pc, over Lan I share that connection to Ubuntu. It seems to me like yesterday it internet worked on Ubuntu with static IP-s, and when I started Ubuntu today I had to put DHCP.

Like, it switches eth1 and eth0

I found somewherehow to put both pc on static ip and have internet connection shared but sometimes it works and sometimes it doesn't.