IPhone UITableView jerky when scrolling?

You definitely shouldn't do anything that blocks the UI thread for significant time while loading cells. E.g. NSData *data = NSData dataWithContentsOfURL:Imageurl .

I guess you got your answer yourself. Your image loading blocks your UI from finishing the current cell request. TableView:cellForRowAtIndexPath: can't return until your image is fetched.

I suggest you replace your image by an activity indicator and start to fetch your image in background. You might want to take a look at Concurrency Programming Guide.

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