iPhone Simulator slow and jerky

My problem is that when ever the iPhone has to push a view (like the keyboard) it takes a really long time (15+ seconds).

I never used to have this problem with the simulator, but after I updated xcode to 3.2.3, the simulator is almost un-usable for anything which requires a keyboard.

For example, on the simulator the springboard app (the one which stores your icons and has the search pane to the far left). When I scroll all the way over to the search, the keyboard pops up immediately but it takes a very long time for it to register any taps and the entire simulator becomes unresponsive.

This happens with any app.

Also, so开发者_如何转开发metimes it can take a very long time for the keyboard to even show.

I'd really appreciate any thoughts!

In my case this was being caused by the NSZombieEnabled flag. Try disabling that if you have it set and the MKMapView may come "back to life".

EDIT: Unfortunately my problem just came back, so the above did not solve this problem. Sorry!

Finally solved this over here. In my case it was caused by a bad stick of RAM. OWC has a good article about checking for bad RAM DIMMs over here: http://eshop.macsales.com/Search/displayFAQDetails.cfm?ID=355 - maybe worth a shot. I re-seated my 2 risers in my Mac Pro, and the simulator is buttery smooth again!

Remember that using shiftkey you can toggle simulator animations slower or faster pushing down shift for about 2 to 3 seconds toggle simulator to slow/fast animation