Well, that's not good at all! Do you know which version of Chrome you have? I think if you click on the Toolbar Wrench and then choose "About" it will tell you.
Is this only in the comments or also in the posts? If it's the posts, I'm wondering if my font choice is an issue. If it's in the comments, I'll need to alert Disqus...
ETA: And thank you for letting me know!