Facebook ad screwing up justification

[systemoverblow'd]

FYI - Weird thing just started happening for me. The facebook social plugin thingie on the right is bleeding over into the margin and it makes the page bigger than the window so the side scroll appears at the bottom. Happens with FF17.0.1, and chrome 27.0.1453.110 on OS X 10.7.5.

See attached picture.