Steps to reproduce:
1. Create an XML which is serveral MB big, and is full of elements like the below:
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<Entities TotalResults="2560">
<Entity Type="test">
<Fields>
<Field Name="estimate-devtime"/>
<Field Name="vc-checkin-time">
<Value></Value>
</Field>
...
2. Open it with an IE.
3. IE got stuck for several seconds and takes over 1GB memory.
Version: 10.0.9200.16660
Update Version: 10.0.8