Installed version 4.0 from the DVD to my second hard drive hdb. Did apt-get update and then apt-get upgrade. On updates, chose use maintainers version and also keep installed version. Upon reboot, it gets to a point and this message displays "WARNING: /proc/ide/hd?/settings interface is obsolete and will be removed soon". Then lists my drives, hda, hdb, hdd then stalls and "hdb:lost interupt" that keeps listing about once a minute. But can not boot to log in. What in update is messing things up? Have installed version 4.0 three times, same results after upgrades are downloaded and installed.