Say I track rawhide, and have 380 updates pending. There are dependency errors. (Hey, it happens.)
There's no obvious way in the updates dialog to just apply a single update, or to pick and choose.
In git you can install a single update with a button now. We're working on a method where the update may be "broken" i.e. would cause the update-system to fail, and so we grey it out in the update list.
Fixed in git, and the soon-to-be-released 0.1.10.