Yeah, I didn't think anyone would miss that problem. I still don't entirely understand why NetworkManager itself (nm-applet) is screwing up my IP, though.
I set it to give me a standard IP of 192.168.2.4
on my network all the time, because my computer acts as an LDAP/NFS server for the rest of the computers on the network. However, when I activate NetworkManager, my IP becomes
. When I turn it off and use the old networking system, I get the IP I asked for.