Comment 1 for bug 881756

Rigourous profiling needs to be conducted and reported back here.
For now, the quick profiling that I conducted led to the 2 following culprits being identified:

- (blurred) background is making us take a screenshot of the desktop twice for no reason
Fix at: https://code.launchpad.net/~fboucault/unity-2d/windowimageprovider_remove_timestamp_hack/+merge/84662

- everytime the dash is opened the home page is reloaded whereas we could just not destroy the home page
Fix at: https://code.launchpad.net/~fboucault/unity-2d/dash_no_unload_page/+merge/84672