How much memory do you have on the Fusion 40? try, if you can, busting it down to the least manditory amount (4 megs. in the lower bank). It might be something as siple as that.
As for the ROM ver. question, if it's working fine under 3.1 and w/o the vid card, I'd say you shouldn't have to worry much about that.
I had one of these in my A2000 yrs. ago and I never had any problems w/ it... Must have been lucky :lol:
Good LUCK!
J. Golden