Error Message Upon Reboot

[Gerard E. Seibert]

The following error message suddenly appeared after I booted up my system. 
The PC is connected to a small LAN. I Googled but was not able to find out 
what the message is suppose to mean.

//Error Message Below//

~ $ Jun  2 15:01:56 seibercom kernel: arp: 00:07:e9:ea:f5:52 is using my 
IP address 192.168.0.2!

//End Error Message//

Since I have not seen this message before, I was wondering it is something 
I should be worried about.

-- 
Gerard Seibert
gerard at seibercom.net