My wife's friend had a lot of trouble downloading a large (125MB) mp3 file onto her laptop from an online class website. I copied the file to my dropbox to see if that would work for her but she still could not download it. Then I suggested she try downloading on a wired computer instead of downloading it on her wireless (wifi) laptop. I suspected that the slower download speed over wifi may be causing timeout problems somewhere in the network route. Guess what, it worked! Now she just has to get her husband to transfer the huge file from her desktop to her laptop.