Back in early July, while I was preparing my handouts for the Honolulu AUGI CAD Camp event, I discovered several bugs in AutoCAD 2008 that affected the creation of tables. If the drawing from which you were extracting data contained dynamic blocks, the tables created from that data would not display the proper data within AutoCAD, although the data extracted to an external file, such as an Excel spreadsheet, was correct.
I reported at that time that Autodesk was aware of this problem and would be addressing it in a future service pack. That service pack has now been released, and I am happy to report that SP1 does indeed correct this problem. Tables created from drawings that include dynamic block data are now generated properly.
The service pack is available from Autodesk's website. I encourage all users of AutoCAD 2008 to download the service pack as soon as possible.