Apparently Arch Enemy has pulled out of the current Machine Head tour in the States. Previously, it was reported that the band was having visa troubles and would join the tour at this past weekend's New England Metal And Hardcore Festival. Although they did arrive at said fest, an apparently throat infection suffered by vocalist Angela Gossow made it impossible to carry on. Look for an official explanation soon. Machine Head's own take on matters can be read here: http://www.roadrunnerrecords.com/blabbermouth.net/news.aspx?mode=Article&newsitemID=22001