I have been getting this message when I try to do a ps

$ ps
ps: proc size mismatch (1236 total, 616 chunks)

what is causing this?  Can I fix it?

My box
Mac IIcx 
8mb RAM
NetBSD 1.3E (GENERICSBC) #72

"Intel Inside"...The world's most widely used warning label."

"Mac users often swear by their Macs, whereas PC users often swear at 
their PCs."
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   'At times we must engage an act of faith that
    key things are doable that are not provable' -- Bob Galvin
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