We have 600 plus servers and 2,700 client PC's. This has been bad for us and there are some not so nice bugaboos with Outlook calendaring (or as we call it lovingly Outbreak or Lookout!). So our changes are this weekend and we'll see the fallout next Monday. Can't wait. (sigh) I just dream of the good old days with Novell and GroupWise; life was easier then....