>    I figured I'd post here first, to see if anybody else has had
>similar problems before going too much farther.  I have a 486DX4/100
[...]

I'm not seeing any problems like this running on a 24MB AMD 486
(5x86/133MHz actually), or on a 64MB Pentium 120MHz.

Maybe some of your new memory is of marginal quality.

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  Michael L. VanLoon                           michaelv@MindBender.serv.net
        --<  Free your mind and your machine -- NetBSD free un*x  >--
    NetBSD working ports: 386+PC, Mac 68k, Amiga, Atari 68k, HP300, Sun3,
        Sun4/4c/4m, DEC MIPS, DEC Alpha, PC532, VAX, MVME68k, arm32...
    NetBSD ports in progress: PICA, others...
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