Content comments not properly displayed after deleting a comment

Only seen it happening in IE9 after deleting a couple of comments in a thread.

![screen shot 2013-06-14 at 16 52 14](https://f.cloud.github.com/assets/218391/655093/7fb96ade-d50a-11e2-86d3-d359b03948a3.png)
![screen shot 2013-06-14 at 16 57 26](https://f.cloud.github.com/assets/218391/655119/25efb412-d50b-11e2-8beb-ae8754c687b3.png)