Should search pages be disallowed in robots.txt?

[MichaelWeisbaum]

The SEOmoz crawler picks up "search" pages on a site as having duplicate page titles, which of course they do.  Does that mean I should put a "Disallow: /search" tag in my robots.txt?  When I put the URL's into Google, they aren't coming up in any SERPS, so I would assume everything's ok.  I try to abide by the SEOmoz crawl errors as much as possible, that's why I'm asking.  Any thoughts would be helpful.

Thanks!

[Kotkov]

What engine are you running and what is the exact url you see when you perform search?

[MichaelWeisbaum]

Using Google and I'm entering the exact URL in the search.  No results are found.  I know this means it's not indexed, but why does the SEOmoz crawler pick it up?