Hi Raphe, There are a couple of things I know that can cause this. One of which I have experienced myself. Sometimes, your router may be faulty. This will usually effect all downloads unless they are very small files. I have experienced this myself, and found the only way to fix the problem is to replace it. Another problem that could cause this is a virus. You should scan your computer for viruses using a trusted antivirus. The virus is sometimes scareware which claims you have a virus, but actually, the only virus is the scareware antivirus! I hope this helps, -Taddle