Hi Severin
The addresses aren't static and your laptop and phone may have tried to use the 
same address, maybe the phone or the laptop may have left the house and upon 
return reconnected and discovered the their previous address had been taken 
over.

Brian
Sent from my iPhone5
IOS 7.04

> On 3 Dec 2013, at 14:51, Severin Crisp <[email protected]> wrote:
> 
> My wife just had a message come up on her laptop to say that another computer 
> on the network was using her IP address, and gave that address.  Two other 
> computers, my iMac and our iPad were active at the time.  I shut down the 
> laptop and restarted and no further message.  I have never had this before 
> and suspect nothing sinister but can someone comment please.  
> Severin Crisp
> ____________________________________________________
> 
>              Assoc Prof R Severin Crisp, FAIP, FIP, CPhys
> 15 Thomas St, Mount Clarence, Albany, 6330, Western Australia
>                   ph (08) 9842 1950 ( Int'l +61 8 9842 1950)
>                            mail to: [email protected]
> ____________________________________________________
> 
> 
> 
> -- The WA Macintosh User Group Mailing List --
> Archives - <http://www.wamug.org.au/mailinglist/archives.shtml>
> Guidelines - <http://www.wamug.org.au/mailinglist/guidelines.shtml>
> Settings & Unsubscribe - 
> <http://lists.wamug.org.au/listinfo/wamug.org.au-wamug>
-- The WA Macintosh User Group Mailing List --
Archives - <http://www.wamug.org.au/mailinglist/archives.shtml>
Guidelines - <http://www.wamug.org.au/mailinglist/guidelines.shtml>
Settings & Unsubscribe - <http://lists.wamug.org.au/listinfo/wamug.org.au-wamug>