A little while ago I asked ([Should I flag comments such as “I agree”, “+1 for x”, or “I changed x in my post”?](https://meta.askubuntu.com/questions/6342/should-i-flag-comments-such-as-i-agree-1-for-x-or-i-changed-x-in-my-post)) if certain kinds of comments should be flagged as useless, and got told that I should just flag it if it did not contribute to the question/answer. 

 This is reinforced by [this answer](https://meta.askubuntu.com/a/2407/47437), which states that comments that are obsolete, wrong, "noisy" (too talkative), rude/insulting, or useless should be flagged.

So I started flagging tons of useless comments all over the place.  I was pretty careful about what I flagged, most of them got accepted, and everything was hunky-dory for a while.

Then my comment flags started getting rejected.  **All** of them.  Here is a sampling (of just the ones that I got the URLs for):

 - http://askubuntu.com/questions/49109/i-have-16gb-ram-do-i-need-32gb-swap#comment54361_49109
 - http://askubuntu.com/questions/49109/i-have-16gb-ram-do-i-need-32gb-swap#comment54432_49109
 - http://askubuntu.com/questions/49109/i-have-16gb-ram-do-i-need-32gb-swap#comment220157_49138
 - http://askubuntu.com/questions/17610/how-do-i-reset-my-unity-configuration#comment117402_72589

These comments are **clearly** not useful.  My question is, why are these (and many other) comment flags getting rejected?  Is there an auto-reject trigger that activates if a user flags too many comments at once?  Did I get on the bad side of some moderator?  Did I do something wrong?  What is going on?