Doesn't the name of the file indicate that the firmware version is 1.11? It has the exact size as the 1.11 firmware from the ftp site, but binary difference reveals that they are indeed different.
Version 1.32 does not allow downgrading to anything under 1.3x so that might be the problem. I think that they sent you the wrong file.
The 1.32b04NA_beta01 only addresses shareport.

Am I the only one here that is getting really angry

? All we want is a functional device, not one that will freeze every couple of days. Instead of working on the real issues with the firmware they are fixing shareport stuff.
Has there been any word from d-link about this? Are they trying to calm people down? Are they showing somewhere that they are working on it? At least that they care?
I've googled and found nothing. So probably they don't! Unless you call for hours and hours and get 3-rd level astronauts to talk to you! Wellll... I hope d-link gets what n-vidia got.
Anyway somebody told me (techgremlin) that a way to fix lockups is to disable dns relay (you have to manually add dns servers to all machines that are trying to acces the net afterwards - you can write them down from the status page of the router before disabling). So give it a try. I've disabled it for a couple of hours now so I don't know if it will work or not. Will post result.