The reason for the changes not showing immediately is that the settings are included when compiling the template.
To get the template compiler to know of this update you need to get the timestamp on the template file updated, for instance using the 'touch' command or restoring it in a text editor.
I can also recommend turning off the template compiler when developing on a site, that way all INI settings are read dynamically. The live site should ofcourse have the template compiler on.
In the future we will probably make the template compiler script (eztc.php) smarter, for instance it detect that the INI file has changed and update template files accordingly.
