b3e78977aa79d3754cb7f8143d7ddabd  http://build.planet-lab.org/third-party/linux-2.6.27.tar.bz2
30795ca0b0e9d2725451c12d6fd0c689  http://ftp.kernel.org/pub/linux/kernel/v2.6/patch-2.6.27.53.bz2
ea81cda32a2310c87c12972ed69b83b5  http://www.cs.princeton.edu/~caglar/patch-2.6.27.53-vs2.3.0.36.4.diff