Wow I remember Degrader, too.
There was a compatibility problem I had with my original Amiga 2500. It was supposed to be sold with 1 MB chip memory but for some reason it had 512 KB instead, and this caused so many problems until I discovered why.
We figured it was probably from a dealer swap or manufacturing line error, even though the Wikipedia article discusses that the A2000 could have 1 MB or 512 KB, the A2500 line was always supposed to have 1 MB of chip memory. Mine came with a real Amiga 2500HD sticker. *shrug*