iotop : Top-like UI used to show which process is using the I/O ( http://guichaz.free.fr/iotop/ )
multiwatch : multiwatch forks and watches multiple instances of a program ( http://redmine.lighttpd.net/projects/multiwatch )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a betagarden
For Paludis use this rsync : rsync://gentoo.zugaina.org/betagarden-portage
If you have a problem : ycarus(-at-)zugaina.org