I'm got RH ES 3.0 on the server running Samba.
Two network cards:
192.168.1.10
192.168.2.10
The users on the 192.168.1.0/24 have no problems getting to the server.
The users on the 192.168.2.0/24 can't see the server.

The gw for 192.168.1.10 is 192.168.1.1. If I try to ping the gw from the server i get a reply
The gw for 192.168.2.10 is 192.168.2.1. If I try to ping the gw from the server i don't get a reply, but if i ping the card itself (192.168.2.10) i get a reply.

If I try to ping 192.168.1.10 or 192.168.2.10 from the 192.168.1.0 network i get a reply.
If I try to ping 192.168.1.10 or 192.168.2.10 from the 192.168.2.0 network i don't get a reply.

When i do a route, this is the output:
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.2.0 * 255.255.255.0 U 0 0 0 eth1
192.168.1.0 * 255.255.255.0 U 0 0 0 eth0
default 192.168.1.1 0.0.0.0 UG 0 0 0 eth0
default 192.168.2.1 0.0.0.0 UG 0 0 0 eth1

Thanks for any help,

did you check to make sure the modules are loaded for both cards,
run kudzu -p to see if it sees both cards, it will say the modules for the cards too, if they're load.

Both cards are there. But i noticed one thing, one card is gigabit ethernet and the other just says ethernet. Could that be a problem?

I restarted Network services and it works now.
Thanks

Have you checked your connections?