There was a recent thread by someone trying to delete measures so he could get his project to end instead of playing onto infinity, and I cannot find that thread.
 
I also could not find the thread I participated in regarding Staff View and the MIDI footprints icon that a guy responded to in Track View play next, etc.
 
But both these threads are nowhere to be found.

The spam blocker is pretty aggressive. One action that triggers it is editing posts. When an OP gets edited there is a chance the entire thread will get deleted.

http://forum.cakewalk.com/Deleting-Empty-Measures-SOLVED-m3746399.aspx
 
google search (use this instead of forum search):
toddskins delete measures site:forum.cakewalk.com

That thread is in the OP's recent posts history. Always a good place to look when one cannot find a recently replied to thread.

Exactly. If you posted in a thread look in your history and find it. Click on your user name at the top of this page. 
You can also look at any users resent posts.