'Organisation' stuck as 'example.com' in RT 3.4.5 onGentoo

If anyone has any ideas of anything I can check I’d
be most grateful.
I’ve double checked everything I’m aware of and am
still scratching my head.

make your changes in /opt/rt3/etc/RT_Siteconfig.pm
(or wherever you installed rt)

restart apache.

reload page.

You may also just want to clear your cache and give it some time.