A few little things first:
1/ On the North switch, you have something called "primary VLAN 5". You don't have the same config on the South switch. I have never used this command, I doubt it is necessary, but it doesn't seem like a good idea to have different config on the 2 switches.
2/ You have "management vlan 2" defined. I don't know what the effect of this is going to be on routing switches. Maybe nothing. I doubt it does anything useful?
3/ You have IP routing enabled on both switches. You also have a "default gateway" defined. If they are routing switches, you don't need a "default gateway", you need a default route, "ip route 0.0.0.0 0.0.0.0 10.0.0.250". Some switches correctly interpret a default gateway as a default route when IP routing is enabled, but some don't.
OK, but the major thing:
You have both switches enabled as routers, and they are both routing for all the same subnets. Although I have seen similar designs that work, to me, this is a horrible way to design a network, and I can think of all sorts of things that would go wrong with it, quite beside it being unnecessarily complicated to manage.
The thing is - you have 5400s, which support VRRP, so you can have a perfectly sound design by configuring VRRP, which will give you much better resilience and simpler management.
Configure VRRP for VLAN2, make North the master and make 10.0.1.1 the virtual on both switches, then make all the VLAN2 hosts use 10.0.1.1 as their default gateway.
As for your Cisco switches - are they on port A19 on both switches?
VLAN5 is untagged to the Cisco switches, the servers mentioned in your DHCP forwarding are on VLAN5, so the requests should be being forwarded OK.
The problem is probably the server's default GW - what is it?
