[ros-users] getting rosinstall to update multiple svns immed…

hi guys,
i'm sure many of you have noticed that as the .rosinstall file fills
with repositories from across the world, ~/rosinstall really slow
down. Even if there are no updates for a particular svn, it takes
several seconds to check it. My question is, is there any way to get
~/rosinstall to 'svn up'/'svn checkout' more than one svn at the same
time?
thank you,
rosen,