DONT USE SOURCEFORGE.
If you dont know already. Sourceforge is a software hosting site that hosted the projects of many open source / free software projects. Recently they have been caught taking over apparently abandoned project pages and repackaging those projects downloads with installers that try to trick you into installing additional malware/adware.
This came up a few days ago when a maintainer of the Windows version of GIMP found that there downloads listed on source forge and their accounts had been taken over with no notice and re-bundled into installers with malicious addon software.
Nmap (a network discovery tool) has also found out that sourceforge have similarly taken over their sorceforge account and downloads http://seclists.org/nmap-dev/2015/q2/194
SF's reasoning apparently is that they are abandoned projects and they "mirror" them to keep them up. But there is not reasoning behind re-bundling the downloads with adware, and all it does is serve to damage the original projects reputations, the end users computers, and line sourceforges pockets. The mirrors they host them on dont even belong to source forge and in most cases is actually donated space, so in reality the sole reason comes down to trying to take advantage of projects who may not notice legacy accounts being taken over for revenue generation.
there are quite a number of accounts that were taken over, among them
Most of the Apache Foundation's projects—including Allura, Derby, Directory Studio, the Apache HTTP server, Hadoop, OpenOffice, Solr, and Subversion;
The Mozilla Project's Firefox, Thunderbird, and FireFTP;
The Evolution and Open-Xchange mail clients;
The Drupal and WordPress content management systems;
The Eclipse, Aptana, Komodo, MonoDevelop, and NetBeans integrated development environments;
The VLC, Audacious, Banshee.fm, Helix, and Tomahawk media players;
The Reaver WPS Wi-Fi hacking tool; and a host of games, utilities, and other applications.
I've always felt sourceforge was slowly going downhill, this to me just proves it, technically they have dont nothing wring with repackaging the programs, as they are free software and anyone is allowed to do that, but the shady practice of taking over accounts, and putting what is effectively malware/adware into them is despicable and harmful. Make sure if your downloading software, you get it from the source. not sourceforge.