So today I thought "When I check the Digital Bits later I don't wanna read about any problems with the Blu-ray." Sure enough: "It appears that there may be volume problems with the DTS-HD MA mix on the Wal-Mart-exclusive IMAX version of Transformers: Revenge of the Fallen on Blu-ray. We've gotten a number of complaints from readers about it. We don't have the disc ourselves, so we're looking into it and will update you when we know more. Be advised that the regular Blu-ray version available at other retailers is unaffected"