I started thinking on the Apple license again. Unlike the GPL, which is a copyright license, it appears to be an end user license agreement which you have to agree with "prior to downloading the code" or something like that.
As far as I can see, this has the potiential for violating FSF "freedom zero". The OSD doesn't seem to have a clause against this (and they even have the Apple license on their "approved licenses" list), and neither does the DFSG. However, the license has been considered a non-free license on this list in the past. While I agree with the sentiment against EULAs rather than copyright licenses, I'm concerned because I can't find the appropriate section in the DFSG against this. Anyone willing to clear things up? Sunnan