It seems the current download link does not provide sufficient connectivity for Slax needs. Current downloads are too slow. Thanks to Faculty of Informatics at Masaryk University, Slax downloads will hopefully be much faster tomorrow.
Edit: It seems lots of the problems is also caused by impatient users who want Slax so badly that they open 20 concurrent connections to the site just to accelerate their download. I've blocked concurrent downloads from the same IP address now. Each user gets just one download connection. Sorry about that.
Edit2: NEW MIRROR is ready at: http://ftp.linux.cz/pub/linux/slax/Slax-7.x/. Please report download speeds.