Ok i have an intersting issue.
i have several node categories and display them in the viewdisplay like
<category><![CDATA[Strathpine]]></category>
<category><![CDATA[Narangba]]></category>
<category><![CDATA[Caboolture]]></category>

now the issue is if the devices have the same ipaddress (loopback) it puts them all in all the categories that have at least 1 of the devices.
i.e
i have 2 devices 1 in Stratpine and 1 in Narangba, Both devices have a loopback of 1.1.1.1 and the both apear in each category.
if i delete the interface and all relating data it shows fine.

I hope this is enough explanation for you to understand.
Thanks
Darren