As of recent I modified the post editing deadline from "Unlimited" to 24 hours. It was modified because some users were abusing this privilege and modifying their posts after the fact. Altering / removing information to harm or destroy a discussion.
It has been brought to my attention that this is not desirable and unfair to the users who have no harmful intentions and that it should be changed again to a larger period.
I have altered the post editing function from 24 hours to 168 hours ( 7 days ).
If you would like to modify a post beyond the 7 day limit, you may do so by requesting a Moderator, Senior Moderator or Admininistrator do it. Simply send one of them a private message, explain what you want adjusted and the adjustment will be made.
Founder of RouterForums.com