I solved my coma issue by following the instructions on this link at xlr8yourmac. http://www.xlr8yourmac.com/archives/jun03/061103.html I followed the advice to delete the "com.apple.Powermanagement.xml " file in the directory "Macintosh HD/private/var/db/SystemConfiguration". I had to use the Terminal to accomplish this deletion, but after a simple restart, I had an upgraded cube with sleep capabilities. Apparently, this file is recreated on the following startup. Your mileage my vary. Greg On 8/18/03 9:36 PM, "Cube List" <Cube at lists.themacintoshguy.com> wrote: > > Date: Mon, 18 Aug 2003 11:45:08 -0600 > Subject: Re: [CUBE] Installing Processor Upgrades.. How Hard? > From: Hal <kastegir at mac.com> > Message-Id: <B586CC54-D1A3-11D7-96CC-0003939225BA at mac.com> > >[snip] > p.s. aside from the "coma issue" (my Cube won't wake from sleep now, > but worked fine before the upgrade), my 800mHz Cube is working great. > It definitely works as advertised. It's noticeably faster.