This is totally shit!!!! When u open firefox or open new tab, it start loading safe.v9.com.
this is Safe.v9.com is a browser hijacker, which is promoted via other free downloads, and once installed it will change your browser homepage and default search engine to safe.v9.com.
Safe.v9.com will display advertisements and sponsored links in your search results, and may collect search terms from your search queries. The safe.v9.com hijack is used to boost advertising revenue, as in the use of blackhat SEO, to inflate a site’s page ranking in search results.
You should always pay attention when installing software because often, a software installer includes optional installs, such as this safe.v9.com hijacker. Be very careful what you agree to install.

