I am trying to install nginx with php but when I am following a guide, like this one: http://www.justincarmony.com/blog/2011/10/24/setting-up-nginx-php-fpm-on-ubuntu-10-04/ I am always told to add that repository (sudo add-apt-repository ppa:brianmercer/php) but I can't. I'll just get "Error: can't find signing_key_fingerprint at https://launchpad.net/api/1.0/~nginx/+archive/php5" and when I go to that website I find that there is a fingerprint specified but still I get that error message. Is there anyway to specify it myself? And for the last thing, how I can fix this so I can continue my installation towards a working nginx enviroment with php. Thanks for your advice and better wisdom.