DHCP - KUBUNTU 7.04`

[JD]

I must say this is pretty frustrating...
I set up dhcp on eth0 at work.
I brought my laptop home, and no matter what I do (even wiping out the
/etc/network/interfaces file), when I restart networking, restart kdm, or
even reboot, KUbuntu shows my dhcp address from WORK...
My only conclusion is that either whatever avahi is it's storing information
separate from networking on Linux...
Or
KUbuntu has a serious flaw in the networking corner...
(I tried setting separate profiles in knetworkmanager, but that tool is
useless - it doesn't "set up" anything)...

Any help is appreciated.  I need to get this working soon so that I can have
access to the VPN at work.  My job depends on it...