Welcome to Wikipedia. Everyone is welcome to contribute to the encyclopedia, but when you add or change content (particularly if you change facts and figures), as you have to the article Software bug, please cite a reliable source for the content of your edit. This helps maintain our policy of verifiability. Take a look at Wikipedia:Citing sources for information about how to cite sources and the welcome page to learn more about contributing to this encyclopedia. Thank you. Walter Görlitz (talk) 02:44, 14 February 2010 (UTC)
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