These are the previous FreeBSD releases that I am seeding.

magnet:?xt=urn:btih:1d07ebd350dddb34f7a095c9b6a0a533cb73e8f8&dn=5.4-RELEASE-i386-all
magnet:?xt=urn:btih:886fdefbbdcad623a9e4e3da27efc221e7bc4007&dn=5.4-RELEASE-sparc64-all
magnet:?xt=urn:btih:1ecc7725c70f240d2e675845dcbe45afdc45ac81&dn=7.2-RELEASE-amd64-all
magnet:?xt=urn:btih:aeafb6fc8f6c27b4e04f0b7b91ff0e725b8299b5&dn=7.2-RELEASE-i386-all
magnet:?xt=urn:btih:dd07187c1481bf3a14366be728aa7db4490d60fb&dn=7.2-RELEASE-sparc64-all
magnet:?xt=urn:btih:00f57ea41fa3504425f6e09eae43f8325164a6b4&dn=FreeBSD-7.3-RELEASE-amd64-all
magnet:?xt=urn:btih:fbdd02b6a9f266434b412d1ebec3897f771e8b07&dn=FreeBSD-7.3-RELEASE-i386-all
magnet:?xt=urn:btih:b84a0b61881c52685a1c21f4a4bf1a3150949388&dn=FreeBSD-7.3-RELEASE-sparc64-all
magnet:?xt=urn:btih:cc8d74e2f6478dec935a6d2422417ec98b778143&dn=FreeBSD-7.4-RELEASE-i386-all
magnet:?xt=urn:btih:e19737083e76e925bcae6ab7c422477338a4c0e8&dn=FreeBSD-7.4-RELEASE-sparc64-all
magnet:?xt=urn:btih:0a94cdd6b56286cc797b6b8ab79663bbefcba419&dn=8.0-RELEASE-amd64-all
magnet:?xt=urn:btih:329525ff9a0fbd43ee25e50c510564919255403e&dn=8.0-RELEASE-i386-all
magnet:?xt=urn:btih:84071f52e7e0810bcc843f0c1c5fda5d67729941&dn=8.0-RELEASE-sparc64-all
magnet:?xt=urn:btih:d10e5a3eb765e294ceb582952d160735c17a6c47&dn=8.1-RELEASE-amd64-all
magnet:?xt=urn:btih:e67f4ebb4c5e6329c655fdca6edffc0ffa6add0a&dn=8.1-RELEASE-i386-all
magnet:?xt=urn:btih:db83493bbe54f2f83893b1c9ddf85f6fc8d6dee1&dn=8.1-RELEASE-sparc64-all
magnet:?xt=urn:btih:dac7f6748419d99c710e03aedef9f702a69c4b74&dn=FreeBSD-8.2-RELEASE-amd64-all
magnet:?xt=urn:btih:0257941ce2c6a191521d73da682ee30520b84d34&dn=FreeBSD-8.2-RELEASE-i386-all
magnet:?xt=urn:btih:fc4a98efebc91c2a966e462496460d5d4319a2f0&dn=FreeBSD-8.2-RELEASE-sparc64-all
magnet:?xt=urn:btih:30c3033c378f202e6ac1d103d44075a9e32a16ba&dn=FreeBSD-8.3-RELEASE-amd64-all
magnet:?xt=urn:btih:6e1075f53f4da280a3dd9114c7dbe80c60ba563f&dn=FreeBSD-8.3-RELEASE-i386-all
magnet:?xt=urn:btih:15cb17d9abffbb45ab06f64aae9ce2f350dba87e&dn=FreeBSD-8.3-RELEASE-sparc64-all
magnet:?xt=urn:btih:dbabaf65f09ade1e3da7010794f9a32c58fab77d&dn=FreeBSD-9.0-RELEASE-i386-all
magnet:?xt=urn:btih:244eccb32d7f070669bb0cce7b2ee1ef5161fee2&dn=FreeBSD-9.0-RELEASE-sparc64-all
magnet:?xt=urn:btih:629d8b1af30e4d82e3c9aaee2f44fc1668eaf9d6&dn=FreeBSD-9.2-RELEASE-amd64-disc1.iso