http://www.ovh.net/files/ I have max 2MB/s ( should be 12.5MB/s )
http://speedtest.tele2.net -- easy way to test FTP upload/download. Same result for me
The download speed I get from ovh is much slower than this website or speedtest.net would show by a factor of about 5. I doubt the problem has anything to do with Vodafone.