Firefox locks up regularly since ver 3.5, especially with more that one tab open.

Question

firefox locks up regularly since ver 3.5, especially with more that ona tab open. navigating thru the www.nokia.be website is a good example, especially when looking for different models and comparing them. firefox needs to be closed then via windows tasks/ close application.
I tried to reinstal firefox 4.0.1, without any add-ons but theproblem remains, it even seems worse!
in Windows explorer this problem never happens!!

Answer 1

try out this code its working...
<?xml version="1.0" encoding="utf-8"?>
<mx:Application 
xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute"><mx:VBox 
width="100%" height="100%" >
<mx:DataGrid width="100%" height="100%" dataProvider="{dataSet}" >
 <mx:columns>
 <mx:DataGridColumn>
 <mx:headerRenderer>
 <mx:Component>
 <mx:CheckBox />
 </mx:Component>
 </mx:headerRenderer>
 <mx:itemRenderer>
 <mx:Component>
 <mx:Panel width="100%" >
 <mx:ComboBox />
 <mx:TextArea />
 </mx:Panel>
 </mx:Component>
 </mx:itemRenderer>
 </mx:DataGridColumn>
 </mx:columns>
 </mx:DataGrid>
 </mx:VBox><mx:Script><![CDATA[
 import mx.collections.ArrayCollection;[
Bindable] 
public var dataSet:ArrayCollection = new ArrayCollection([{Month:
"Errors", Income:1500, Profit:90},{Month:
"Work In Progress", Income:1200, Profit:1000,percent:100 },{Month:
"Pending on Trustee",Income:1200, Profit:1000,percent:125},{Month:
"Pending on Notary", Income:750, Profit:1500,percent:175},{Month:
"Pending on Signature", Income:860,Profit:900,percent:75},{Month:
"Pending on County", Income:500,Profit:750,percent:175}]);
]]>
</mx:Script></mx:Application>