With our 3.5 kernel on XO-4, using olpc-os-builder, sometimes a cp stalls in D state while using two loopback mounts backed by USB HDD. It is easily fixed at the time using drop_caches. Anyone got any ideas? Seems to be independent of wireless device or hard drive. http://dev.laptop.org/ticket/12864 -- James Cameron http://quozl.linux.org.au/