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OK thanks that's good to know. I shall just be patient then

Thanks Keri, I think this might be user error! The problem only seems to occur if I import the CSV into an exisiting Excel spreadsheet. If I directly open the same CSV in Excel then it formats as expected. So my mistake it seems. Sorry for wasting anyone's time! Ben

Google will cache whatever you serve up. So if your page serves up random text, Google will cache random text. Have you tried to add the file back in with a NOINDEX command?

Thanks Tom, That's all very useful stuff, and food for thought. Cheers Ben