im using s/w: xilisoft 3 dvd r/wptiarc dvd rw ad-7240s prosessor:amd athlon(tm) ii x2 245 and it takes me about 5 hours to burn a 700mb avi to a dvd-r
Check to see if this is applicable. It's to check that DMA is enabled on a burner. http://forums.afterdawn.com/thread_view.cfm/260038