Comment 86 for bug 43961

I confirm similar problems (no shutdown) for Dapper on three machines that worked previously with Breezy:

 1) Pentum III, Dapper Server -server kernel
 2) Pentium III, Dapper Desktop after upgrade to -686 kernel
 3) Pentium II, Dapper Laptop -686 kernel

The problem with the server is serious since it may require physical access to the machine upon system restarts. Clearly not acceptable upon remote "headless" server operation. Equaly irritating is to experience completely drained batteries on a laptop since it did not power off properly. I really appreciate very much Ubuntu Linux and hope that finding a solution for this problem gets high priority.

Power off works OK with the 686 kernel on another laptop, my Sony Vaio VGN B1XP, but suspend and hibernate are less reliable.

I could post data for the five systems upon request but will not include this info to save space on the launchpad.