Your pages may be in Googles cache, to prevent Google or any other website from storing your pages in its cache, use the no-cache tag in your files.
Generally I would just use this on the pages that you don't want google to cache, however, it will not hurt your rankings if you use no-cache on every page (but really, why would you?)
About the robots.txt file:
Read this:
http://www.outfront.net/tutorials_02...ech/robots.htm
and this:
http://www.pageresource.com/zine/robotstxt.htm
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Read this if you want to know how to get a correct reply for your question:
http://www.catb.org/~esr/faqs/smart-questions.html
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Technical Editor for:
Professional Search Engine Optimization with ASP.NET
http://www.wiley.com/WileyCDA/WileyT...470131470.html
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Why can't Programmers, program??
http://www.codinghorror.com/blog/archives/000781.html
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