FOSS distributions are increasingly over pressure to deliver stable releases including the most up to date upstream software. Time-based release strategies has exacerbated this problem putting even more pressure on QA teams. The recently concluded Mancoosi project has developed a number of tools to automatically analyse large packages collections for a range of problems, from installability checks to speculative analysis of software repositories. In this talk I'll present four command line tools to identify and correct potential problems as soon as possible during the release cycle.