If you have a problem with document information panel on your excel/word files which is “drop down list” not show all the items from Windows Sharepoint Services v3.0 or MOSS 2007 list, you can fix it by change the item limit on the default view of the list.

It is by design the drop down list just showing up the items on the first pages on the default view of the list, so to show it all, you must increase the item limit.

Hope.. the next patch for microsoft office will fix it.