@AmigaDave:
I've been a little distracted with my 4000T setup recently. My 1200 came preconfigured with OS3.9 from Amigakit. Installing OS3.1 onto a CF card from scratch was a very serious endeavor for me.
My 1200: B1260 w/128mb, IDE CF-card (AmigaKit), Subway USB, Indivision AGA->Acer AL2216W, Logitech USB->PS2->Cocolino, Linksys EtherLink III, AmiTCP (same version as network boot disk). Right now I have BB1 & 2 and recently installed MagicWB (which nags me now).
I will DL the latest BB#3 and report back.