I'm getting this error when opening excel documents stored on a network share. These are multi-sheet documents, and I'm 100% sure that the information in them is valid (they were saved just days before). This happens on more than one workstation, on multiple documents. A document will work fine for a few days, then after someone changes it, the next person to open it is faced with the dialog stating that repairs to the file failed, because damage to the file was too extensive.

This is using Excel 2003, on both Windows 2000 and XP. The files themselves are stored on a network share on Windows 2000 Server.

Any ideas?