As the original request, I am having issues exporting to CSV format. I recently upgraded to the Q2.2011 version and the radgrid "export to csv" seems to have been affected. It no longer exports data only the headers. Export to PDF and Excel appear to be working (I prefer CSV).
The only are export settings modification are as follows:
radList.ExportSettings.Pdf.PageTitle = "some title";
radList.ExportSettings.FileName = "filename";
radList.ExportSettings.ExportOnlyData = false;
i.e.,setting ExportOnlyData to true or false did not affect outcome.