Keeping them crossed for you kiddo. Keep us posted.
One thing that troubles me is the fact u had Indivision & X-Surf100 in your Miggy for some time before installing the drivers. Any hardware u put in a miggy if ZORRO based will automatically register on the systems auto-config. Amiga's do not behave like PeeCee's. Based on this fact, I am left a little confused to say the least, & fail to see why driver installation would kill your A4KD in the manner it has.....
Pull the X-surf & see if it behaves..... Still thinking ur Hard Drive may be the culprit.