<P> Lubuntu used Chromium as the default browser since its first release, Lubuntu 10.04 in April 2010, until Lubuntu 13.10 in October 2013 when it moved to Firefox instead . Ubuntu started offering Chromium through the Ubuntu Software Center starting with Ubuntu 10.04 LTS as part of the' universe' repository . The initial version available in April 2010 was 5.0. 342.9, with brand new versions delivered as updates . Puppy Linux has had Chromium available starting with Chromium 5.0. 342 on Lucid Puppy 5.0. 0, based on the Ubuntu application repository . Maemo, Nokia's former mobile operating system, offered a proof - of - concept version of Chromium with an unmodified user interface which was released on 11 April 2010 . </P> <P> Chromium 6.0 was introduced in May 2010 with the first release version 6.0. 397.0 . In July 2010 Chromium 6 daily builds introduced new features focusing on user interface minimalism, including a unified single page and tools menu, no home button by default (although user configurable), no "go button", a combined "reload / stop" button, bookmark bar deactivated by default, an integrated PDF reader, WebM and VP8 support for use with HTML5 video, and a smarter URL bar . Chrome 6 was released in both a stable and beta version on 2 September 2010 as version 6.0. 472.53 . The switch to 6.0 brought security fixes, a slightly updated user interface, improvements to form autofilling, synchronizing of both extensions and autofill data, along with increased speed and stability . </P> <P> Chromium 7.0 was released on 17 August 2010, with 7.0. 497.0 as the first version made available . This version boosted HTML5 performance to double the speed of Chromium 6 . It also added hardware acceleration, which speeds up the browser in complex graphics situations by a factor of 225 times, integration of instant search, UI Tabs to move all the remaining user interface windows into the browser tabs, including the "options" menu, and is 3% faster JavaScript performance . </P> <P> 7 October 2010 marked the release of Chromium 8.0, seven and a half weeks after that of Chromium 7 . The initial release in this series was version 8.0. 549.0 . The development of Chromium 8.0 focused on improved integration into Chrome OS and improved cloud features . These include background web applications, host remoting (allowing users centrally to control features and settings on other computers) and cloud printing . On 12 January 2011 versions of Chrome and Chromium prior to version 8.0. 552.237 were identified by US - CERT as "contain (ing) multiple memory corruption vulnerabilities . These vulnerabilities include a stack corruption vulnerability in the PDF renderer component, two memory corruption vulnerabilities in the Vorbis decoder and a video frame size error resulting in a bad memory access...By convincing a user to view a specially crafted HTML document, PDF file, or video file, an attacker can cause the application to crash or possibly execute arbitrary code ." This vulnerability was publicized after Chrome version 8.0. 552.237 was released fixing these problems, to alert users to upgrade versions as soon as possible . </P>

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