Interesting comments are broken to this latest report. I understand you have been having difficulty even just uploading this report.
I clicked on 'bug report' and found this:http://www.google.com/support/youtube/bin/answer.py?hl=en-GB&answer=58123
Do you have allow comments checked or is that broken too?
It does appear 'comments' is a 'known issue' at the moment also http://www.google.com/support/youtube/bin/static.py?page=known_issues.cs
On a positive note, I did manage to post a comment 10 mins ago. I had to wait about 10 mins though after clicking 'post' before the comment was finally uploaded
Edit: Though I am a conspiracy theorist (9/11 was an inside job) I think in the case of your channel you have nothing to worry about. Youtube is just experiencing a few hiccups