this has already been fixed long ago:
https://bitcointalk.org/index.php?topic=93437.msg1552818#msg1552818
https://bitcointalk.org/index.php?topic=93437.msg1570874#msg1570874 (look at the 2 next posts of markm)

he incorectly used the ProofOfWork hashes as checkpoints, but on litecoin (since bbqcoind is a litecoin fork) and i took some time until he saw that its wrong (had to post it server times tough...). afterwards he fixed it and released new tarballs.