Software-properties takes a noticable amount of time (too long) to enable a PPA

[Lee Hyde]

As I make regular use of software-properties (e.g. having to remove the annoying 'disabled on upgrade to x' appendage that Canonical seems to deem vital, from what's got to be going on 100 PPAs), I've noticed that from the outset the UI is slow to respond to user input. Re-enabling a repository typically involved a noticable delay (perhaps a few hundred milliseconds) between ticking the checkbox and seeing the repository enabled, during which time the whole software-properties UI is frozen.

Presumably it's not just an unresponsive UI and the backend is churning away, doing it's thing. However, does it have to take so long? it really slows down progress when you're re-enabling/disabling a lot of repositories in one go. If the delay is unavoidable, would it not be possible to implement a batch enable/disable option, or else have software-properties make the actual changes when it closes rather than in-situ (admittedly not perfect).