I edited some questions before, but I am no longer able to click the edit button. I thought there was a problem with the specific question, but I cannot click it on any question.
What's going on?
There are a handful of conditions where we will stop accepting edits:
In the past no "edit" link would be shown at all; since July 2012 the edit link is disabled and the mouse hover tooltip will explain why an edit cannot be suggested, like "Account is not allowed to suggest edits".