Updated ACPI driver for eComStation is available for "inhabitants" of the eComStation beta-zone. Read the scenario of testing in ACPI.doc (testing the event of Power button).
"The ability to support ACPI is becoming more and more important in order to take advantage of new power management capabilities, or even to support the operating system on newer hardware. Therefore, support for this technology will be an important feature to many users in the new version of eComStation." PDF:
http://www.ecomstation.com/edp/mod.php?mod=ecsfile&get=27 HTML: http://www.os2ecs.org/ecsroadmap2005.html
You can access the beta-zone via http://betazone.ecomstation.nl or http://www.ecomstation.com -> [Log In] -> Access the BetaZone (if you get error related to password then edit your password via Profile and try again)
The ACPI driver is a product of Netlabs (http://www.netlabs.org/)