Some people might not realise that 2.4.20-rc3 and 2.5.49 are on-line, as the subject lines of the mails to the list are mostly Re: the initial request for them, so here is a summary of the mirrors:
2.4.20-rc3:
ftp://zeniiia.linux.org.uk/pub/linux/kernel/v2.4
ftp://zeniii.linux.org.uk/pub/linux/kernel/v2.4
http://ftp.linux.org.uk/pub/linux/kernel/v2.4
ftp://ftp.linux.org.uk/pub/linux/kernel/v2.4
Thanks to Russell King for providing those and Andre for the original download.
http://grabjohn.com/kernel
My mirror, (not as fast, but I did promise to mirror them).
2.5.49:
ftp://zeniiia.linux.org.uk/pub/linux/kernel/v2.5
ftp://zeniii.linux.org.uk/pub/linux/kernel/v2.5
http://ftp.linux.org.uk/pub/linux/kernel/v2.5
ftp://ftp.linux.org.uk/pub/linux/kernel/v2.5
Thanks to Russell again for those, and Andre for the download.
http://grabjohn.com/kernel
My mirror, (just for the sake of it :-) ).
John.