System.base_url will be ignored+issues

I have one wagn installation. I have added additional rails enviroments because I wanted independent wikis on the same installtion. I works so far as I expected. Except of System.base_url seems to be ignored. I moved it from wagn.rb to xxx.rb enviroment definition file. But it will be ignored.

The System.base_url is not a really big issue. I ask my self whether a muti enviroment setup is generally a good idea? Which ohter important properties will also ignored. And at the end it would be nice to have System.base_url working :)

Will System.base_url only used in an enviroment thats name is production? In an other installation I use that default enviroment and System.base_url works like I have expected.