IP address incorrectly assigned on boot

[Geoffrey Leach]

A system on my local network (pvr) has its IP address in /etc/hosts

geoff at pvr[1]->cat /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 
localhost4.localdomain4

192.168.10.2	pvr.mtranch.com pvr
192.168.10.3	mtranch.mtranch.com mtranch
192.168.10.1	Netgear
198.168.20.5	Homerun

Netgear router accessed from pvr via wireless. It has the address 
192.168.10.2 reserved and assigned to pvr. Worked fine.  Today after 
booting up the latest kernel, (3.2.2-1.fc16.i686.PAE), the IP address 
has changed to 192.168.10.5:

geoff at pvr[2]->ifconfig wlan0
wlan0     Link encap:Ethernet  HWaddr AE:5D:BA:91:67:2D  
          inet addr:192.168.10.5  Bcast:192.168.10.255  
Mask:255.255.255.0
          inet6 addr: fe80::ac5d:baff:fe91:672d/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:484 errors:0 dropped:0 overruns:0 frame:0
          TX packets:462 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 

you'll note that it is 192.168.10.5 

Not surprisingly, I can't ssh 192.168.10.2, but I can ssh 192.168.10.5

Question: where is this (dynamic?) assignment taking place?