On Ivo's answer to this question the "flag" post link is missing.
I've checked other posts at random and they all seem to be OK. This has been consistently missing too.
I should have added I'm running Google Chrome (5.0.375.99) on Windows-XP.
Okay, I figured it out.
You can't flag a post that you have accepted as an answer. For example, I am missing the link on What are the major differences between the different versions of the PS3?, which is an answer I accepted. The same occurs on the Trilogy as well, so it's always been a feature that I guess we overlook.
We're going to allow flagging for moderator attention on any accepted answers that you've marked. Indeed, any post should be allowed to have moderators informed about it.
This will be pushed out tonight.