roswtf warnings: unexpectedly connected.

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Hello, when I run roswtf I get the following warning. Why does it think the nodes are unexpectedly connected?

Found 1 warning(s).
Warnings are things that may be just fine, but are sometimes at fault

WARNING The following nodes are unexpectedly connected:
 * /rviz_1299863506781450302->/rosout (/rosout)
 * /openni_node1->/rosout (/rosout)
 * /kinect_base1_link2->/rosout (/rosout)
 * /openni_node2->/rosout (/rosout)
 * /kinect_base_link1->/rosout (/rosout)
 * /kinect_base_link->/rosout (/rosout)
 * /kinect_base2_link3->/rosout (/rosout)
 * /kinect_base1_link3->/rosout (/rosout)
 * /kinect_base2_link2->/rosout (/rosout)

Best,

CV