took me a while to figure this out. First, you need the have a language plugin installed other than default so go here and get the English-GB plugin unless you use another language:
www.joomlapolis.com/cb-solutions/languages
Then you will copy from here: public_html/components/com_comprofiler/plugin/user/plug_cblanguageoverride/language/default_language
these files:
language.php
admin_language.php
to here:
public_html/components/com_comprofiler/plugin/language/en-gb/cbplugin
then once copied, add the prefix "cblanguageoverride-" to of those files so the files will be renamed like this:
cblanguageoverride-language.php
cblanguageoverride-admin_language.php
Then go into whatever language.php file form the original en-gb folder, find the language thread you'd like to change, copy the entire line and paste it into the "array" area in the cblanguageoverride-language.php or cblanguageoverride-admin_language.php file and change it to suit your needs like this:
return array(
'FORGOT_LOGIN_1e16ba' => 'Forgot?',
);
It's a convoluted method but seems to work.