MozillaZine - General information on the Open Source Netscape project.
Newsfacto.com: Linux/Open Source - Portal covering distributions, databases, development, security and servers. Lists technology news, white papers, newsfeeds and industry specific articles.
Open Source Forge - Features news, community discussion forums, and open source press releases.
O'Reilly OnLamp - Provides articles on the open source LAMP web platform. Roughly defined as (but not limited to) MySQL used in conjunction with Linux, Apache, and either Perl, Python, or PHP.
Temple of the Screaming Penguin - Linux-based site. Content is fairly technical; site has many links to other sites and articles. All the tech news that matters, with an Open Source software bent.
Happy Birthday to GNU - A short film featuring Stephen Fry, to introduce the idea of free software and celebrate 25 years of the GNU/Linux operating system. (September, 2008)
BBC News: Legal Milestone for Open Source - Supporters of open source software are claiming victory after a US court ruled copyright protection applies to their work. (August 14, 2008)
XML Feeds:
eWeek: Linux - Linux and open source articles and reviews, from the magazine. [RSS]
Slashdot - Open-source and other technology news for nerds. [RSS]
Topix: Open Source - News about open source, collected from various sources on the web. [RSS]