Every time I start my computer, a lenovo thinkpad t61 (intel graphics version), running ubuntu 13.04, I get a pop-up to report an error. Details reveal that it's related to add-apt-repository. Maybe I have some ppa added that's not good, I'm not sure. If there's any way I can get some help here, I'd love it. I've just noticed another error, a few minutes after startup. Let me know, guys. Thanks!