Hart recorded his next solo album (and first in a decade), "Hot Wax", in Montreal and Minneapolis. Hart told Britain's "Q" in September 2006, "I'm working on some stuff with the Godspeed You! Black Emperor people. They've given more of themselves in a few weeks than Bob did in nine years with Hüsker Dü." In 2008, Hart was one of the guest singers on "Lotuk", the third album of Arsenal, a Belgian band combining roots and dance music. In the summer of 2008, Hart debuted a new track, "Schoolbuses Are For Children," on his Myspace site. He released "Hot Wax" on October 6, 2009. "Intolerance" was reissued on February 9, 2010, on 180-gram vinyl, and "The Last Days of Pompeii" was reissued with extra tracks and new mastering on December 7, 2010.