Mac Wkst: PowerBooks Will Not Sleep or Spin Down

Version 3.1 of Microsoft Mail for AppleTalk Networks may prevent a Macintosh computer with sleep ability (such as the PowerBook) from automatically going into sleep mode.

Microsoft has confirmed this to be a problem in version 3.1 of Microsoft Mail for AppleTalk Networks. This problem was corrected in version 3.1a.

Version 3.1 of Microsoft Mail for AppleTalk Networks provides local storage for mail users. All locally stored data is kept in a single storage file in the user's system folder. This local data file uses a compression routine to keep the local data file at its smallest size. This compression feature causes the hard drive to activate on a regular basis. The machine interprets this activity as an active process and therefore does not sleep.