I just hit one recently(as you may know). but it has taken me about a year of low rep flat bench training for it to occur. And I've just added some DE work (also as you may know) and it seems to be progressing again.
The stall has only been a matter of 4-8 weeks, so I don't know if you would actually consider that a real plateau.
"The fastest way to get strong muscles is also the fastest way to make them bigger. We know what works best to make them strong in the shortest time possible. If you want to get big, do the thing that makes them strong." - Marc Rippetoe
Zdravko Veselin Gaeta
I am not a powerlifter nor am I a bodybuilder. I just want to be big and strong.