check-names warning?

[aklist_bind at enigmedia.com]

Hi All: running BIND 9.3.0 on FreeBSD 5.x

Just noticed three warnings pop up in my log:

Nov 13 12:32:32 ns2 named[495]: check-names warning 
wip.neimanmarcus.com/NS/IN

Nov 13 12:32:32 ns2 named[495]: check-names warning 
prod_lc1.wip.neimanmarcus.com/A/IN

Nov 13 12:32:32 ns2 named[495]: check-names warning 
prod_lc2.wip.neimanmarcus.com/A/IN

I have nothing to do with neiman-marcus's NS...is this a benign error or is 
it something I need to worry about?