It's worth noting that it takes time to wipe one's hard drive. There are also concerns when dealing with a Solid State Drive (SSD, which is what most mid-to-high-end laptops contain these days). The way they work makes permanent data erasure less straight forward. I'm sure DBaN can handle it, just don't expect it to be finished before the cops are done breaking through your door or something like that; and remember it's a little more complex than usual with a SSD.