I made a small change to handle older comments the same way as the recent ones. Years ago HTML was allowed in comments, which can be quite messy, so I converted the HTML of old comments to BBcode so now all are managed the same way.

I also had to mass-replace some dead smilies in comments: at a moment people were using smilies from a site that changed their structure, so instead of a small 16x16 smiley these comments had a huge generic crying smiley occupying the whole screen. I replaced these by a block like this:
[dead external link to a smiley]
(not very pretty, but it is explicit)