netBSD 1.5 on a 1994 Mac68K

I've been having fun working up this configuration, thanks to Chris and a local netBSD company. The onCD documentation for installing the OS was a little spotty, It's taken a bunch of workarounds to get it this point: O/S loaded and booting which I can make public if anybody wants. It threatens to be entirely enjoyable experience, if it works reliably, which it isn't at current. I get random segmentation and other faults during medium level of challenge commands like df,du, and pstat. I'm thinking there's three possibilities right now: (1) mis-configured swap space, (2) feeble SCSI driver + marginal SCSI drive specs, (3) bad memory. There could be another cause; I don't know. #1 seems most likely since all I've done is create the swap partition, no config changes were made, but the /etc/fstab at least looks OK to me. #2 has been hinted at by some documentation, but the disk load went without hiccup. #3 hasn't been seen within the MacOS (7.5.1) but I don't know any serious tests for it. If anyone is dealing with BSD right and wants to comment, be my guest. John A.