I love this extension as it handles the job of altering UA automatically (set up and forget plugin), but now for whatever reason it doesn't save domain preferences so I have to disable it on custom domains (like youtube else the page won't show) every time. I would like to put 5 stars if this issue is corrected, for me its still the best plugin for that application.

EDIT : I think its just the exception list that is reset; maybe after update of the plugin (autoupdate is on, I will disable it to check)