ftp://ftp.dit.upm.es/linux/mirrors/ftp.kernel.org/pub/linux/kernel/  direct

[DIR]v2.6/  direct  2521+ twin directories
[DIR]v2.5/  direct  4294+ twin directories
[DIR]v2.4/  direct  5549+ twin directories
[DIR]v2.2/  direct  2530+ twin directories