X-Axis labels disappear when adding data table to chart

Dear Excel Forum:

I have a strange occurence when creating charts in Excel 2003. If I create a chart with X-axis labels, then go into to "Chart Options" then click "Data Table" tab, and click "Show data table" the X-axis labels disappear and are replaced with integer series of numbers. If I deslect "show data table" the X-axis labels return? Any help with this would be greatly appeciated.

Sincerely,
Charles.