the download stops randomly between 0.7 and 5%.

Tested in Opera and Firefox, gave me the same results...

If it keeps failing, you can try the beta6 client instead of the production client. Downloading the beta6 client will let you into the game right away, but if you download the production version, you will have to wait for it to update to the latest production version.

Try FreshDownload: http://www.freshdevices.com/

finally got it to work, thanks :)