I have 2 3750 (L3) switches in a stack, i refer to them as the "Core Switch" as my other 12 3560's hook up to this, as well as a 2950, and a dell 3548. Now my 3750's are my DHCP servers. I have 4 total networks, a 10.10 net, a 10.64 net, and 1 networks for our office phones, and one for our actual business phones (Office and Business phones are VLAN'd). For some reason my first 3 offer dhcp addresses to clients when they request them. But for some reason one of my VLAN's stopped offering addresses, I have checked the dhcp bindings in the switch and i should have about 80 addresses left that can be assigned. I can manually assign myself an address that i know is not being used and everything is fine. I am at a loss right now. Any advice would be fantastic as our lead Network admin has vacated the premises and i am the only one that really has any knowledge on that, little as it may be. Thank you for your consideration.

I am pretty sure they are, would it help if i posted some config files?

For sure, i will have to go through a few of them and try it out. If this is any help, i can plug a device directly into my core switch (DHCP server) and it still will not assign an ip to it.  Give me a few minutes and i will upload some config files.

You can turn on DHCP debugs and then plug in a host and see what can of messages you see.
 
Make sure term mon is on to see the debug output.
 
Commands:
debug ip dhcp server events
debug ip dhcp server packets

Issue solved. Reboot fixes everything. I could always ping my 3750 stack, it's just that i had to statically assign myself an ip that was not already assigned or had a binding. But this is the first time it has ever happened in there 4+ years of service. So sweet goodness. Thanks for the help guys.