Limited the amount of time an entry stays in the DNS cache to 1 hour

Ignore-this: 3449e04e2f77020297194cfe34982a9d

darcs-hash:20100122124101-1e3d8-58be0ba41d10ef7504ab243415569d5f83f656d6
Fixed formatting of module docstrings

Ignore-this: d66a49b1233278d4c7ff17f446315d3a

darcs-hash:20100122125535-1e3d8-78a66426dc07c1c958df7b410578edd04c91a8c6