I start writing a comment... then I might move to another window to do something... time passes... I do many things in many windows...  Then I come back to complete my **askubuntu** comment...  and it has been **posted** (and I'm not the one who posted it!)

This is becoming a chronic problem...   Some of these un-edited comments are definitely not ready for general viewing... and I can't re-edit them because of the comment-edit timeout (which I don't quite know the details of yet)... 

Has anyone else experienced this? ... 

I've noticed that some general settings interact badly with some aspects of other programs.     
eg. When Assistive Technologies "*Mouse Locate Pointer by pressing CtrL*" is enabled, it prevents me from using Ctrl+C to copy a filename when in "*Nautilus filename-Rename (F2)**  
... maybe it is something along this line?