I get an error saying iDisk can't sync because a Word document is in use. Why can't iDisk sync when a Word document is open? Dropbox syncs the file after each incremental save operation is performed.
iDisk is not DropBox (or as good as). I find it best to just copy word docs to my desktop, work with them, save them, then replace the iDisk copy and let it sync (if using local iDisk).