Comment 8 for bug 772177

As it's already the second branch with the exact same patch, let me copy here why setting from 0.2 to 0 isn't the solution:
Indeed, if you alt + tab between two applications very quickly, you will then see a flickering dialog appearing. The delay is there to prevent that and it was discussed in natty as part of a design decision.

we already tried to change the popup delay from 0.2s to 0.0s, but design came back because it's flashing when you just alt + tab quickly.

See the debian/changelog history:

compiz-plugins-main (0.9.4-0ubuntu4) natty; urgency=low

  * 03_default_options.patch:
    - revert the ubuntu change from 0s to 0.2s delay back to avoid flickering
    - show other window when doing alt-tab and ensure that the settings are
      according to LP: #736938

compiz-plugins-main (0.9.4-0ubuntu3) natty; urgency=low

  * 03_default_options.patch:
    - change default option from 0.2s delay to 0s for compiz staticswitcher plugin
    - don't get a close animation on gnome-screenshot (LP: #93234)
    - Change <Super> + e to <Super> + s for switch workspace (trigger expo mode)
      in the classic session as in unity (LP: #723273)
    - deactivate mipmapping in staticswitcher as it can make alt Tab very slow
      (some seconds) on some hardware (LP: #684843)

That's the reason why we reverted the change made in 0.9.4-0ubuntu3 as a design decision. That's why I will have to disapprove this change.