[Simon Lloyd]

, always used the \r\n but either way it doesn't seem to work in the plugin, i have tried changing the execution order but no go, and im pretty sure the syntax is right?

--------------- Added [DATE]1307505034[/DATE] at [TIME]1307505034[/TIME] ---------------

infact if i have the execution order earlier than another plugin using the same hook that checks user agents the plugin doesn't work, so it kind of looks like its stopping the user agent from getting through any further but it's not redirecting????

--------------- Added [DATE]1307505279[/DATE] at [TIME]1307505279[/TIME] ---------------

I have also substituted strtolower($_SERVER['HTTP_USER_AGENT']); for strtoupper($_SERVER['HTTP_USER_AGENT']); but no change