This question was asked before: How to get previous behaviour of alt-tab task switcher in 11.10
But the accepted answer did not answer the question.
The 11.10 task switcher is way to slow. It does not show all of the apps running. It only shows categories, then after a long pause it shows the instances in each category.
I want to go back to the better solution in Ubuntu 10.10
alt+tab
with "alt+`" and change between instances with same key combination.