I am very happy to announce that my enhancements to the Grails Spring Security Plug-in (Acegi Security Plug-in http://grails.org/plugin/acegi) based on Stephan February's work were integrated into the main Plug-in source tree. Burt Beckwith, the Plug-In maintainer, did the integration including further features (e.g. annotation based configuration) and polishing.

The official announcement including an example application can be found on his blog (http://burtbeckwith.com/blog/?p=287).

Thank you for your great work Burt!