scrollview is extremly slow on ics (android 4.0) when containing a long textview

Question

Here\'s my problem, i\'m developing a news applicaiton and i used scrollview wrapping a textview to show the content of the news. But i found that scrolling is extremly slo

Answer 1

Well, i've found the solution on my own

just set android:hardwareAccelerated="false" in the manifest.xml

Still quite confused about the reason, waiting for an explanation.