I hope that you got your backup built from the command line though
yes, the command-line method worked just fine, and very fast!
lol indeed fast... generally though I woudln't recommend using the all-databases flag though, since i'tll backup every db you have access to (and on a missconfigured server you may snag crap you won't want or that aren't your db's), instead you shoudl specify the databases that you want specifically.