Make /bin/sh configurable with update-alternatives
Binary package hint: dash
The choice to make /bin/dash the shell for /bin/sh causes quite a few problems: The ATI-driver fails to build (#68635), Parallels won't configure and VMware is not that happy either, as they use stuff in their scripts that dash doesn't support. I bet there are quite a few other applications that have problems with this switch (especially as Ubuntu is the inly distro I know that uses dash by default).
If you really want to keep dash as the default-shell, please make it configurable via update-