Visit http://www.fileplanet.com/ to see:
Some time ago they killed all the hosted sites on the planet* sites. Now Fileplanet which they forced their hosted sites to use for downloads. Expletives!
By the way, I mirrored the forumplanet forums a while ago: http://archive.org/details/Forumplanet.gamespy.comArchive
If you are interested in helping out with bandwidth or scripting, come join #archiveteam in EFNet.
for coordination of ranges contact me or join #archiveteam in efnet
Eh, about forumplanet… http://forumplanet.gamespy.com/ is redirecting to http://www.ign.com/boards/ now. I could not find any of the old Quake boards.
http://www.ign.com/boards/forums/diablo.5218/ suggests they just moved them all though. Morons.
If it’s any help (probably redundant), I did a partial mirror of planetquake many years ago. http://taniwha.org/~bill/games.txt.gz a list of what I’ve got readily accessible.
I will get back to you. 
If you want to help see http://archiveteam.org/index.php?title=Fileplanet
One year later, we are finally truly getting close to completion.
All files are now uploaded to IA. Stay tuned for a user-interface.
~120 000 public files, 9.5TB
~200-300 000 not public as those are mixed with private files, ~2TB or something
I am now finally working on a frontend. Very WIP but functional https://www.quaddicted.com/stuff/temp/fileplanet.php?filename=quake
Not fancy, but you can download fine.
If someone wants to collaborate, please shout. It’s php & sqlite3. Great features to have would be a realtime search box and pagination. I have more metadata, screenshots etc, which I will join later. I will probably also properly restore the timestamps, noticed the “23:00:00” just now. I have them accurate to the minute.
Some more work on it, directory browsing and detail pages where we have details.
https://www.quaddicted.com/stuff/temp/fileplanet-postgres.php?filename=nude
https://www.quaddicted.com/stuff/temp/details.php?id=196653 NSFW?
https://www.quaddicted.com/stuff/temp/fileplanet-postgres.php?directory=/ftp1/action/quake/
Still very WIP, so keep it to yourself.