SGI Irix 6.5.6m gcc 2.95.2 updated and rebuilt this AM w/full error checking/debugging this is completely reproducible for me: 1. load 2 files into buffers 2. M-x ediff-buffers, RET, RET 3. mouse cursor is warped to ediff control frame 4. xemacs go boom *as soon as mouse is moved* (tried a couple of times and waited, but it never crashed until I touched the mouse) no lisp backtrace, but was running under gdb, so got this stack trace: #0 kill () at engine.c:648 #1 0x41531ac in raise () at iconv_converter.c:22087 the insight window shows: 0x40b04f0 <kill>: li $v0,1037 - 0x40b04f4 <kill+4>: syscall - 0x40b04fc <kill+12>: nop - 0x40b0500 <kill+16>: move $v0,$zero - 0x40b0504 <kill+20>: jr $ra - 0x40b0508 <kill+24>: nop - 0x40b050c <kill+28>: move $t8,$ra - 0x40b0510 <kill+32>: bal 0x40b0518 <kill+40> - 0x40b0514 <kill+36>: nop - 0x40b0518 <kill+40>: lui $t4,0x10 - 0x40b051c <kill+44>: daddiu $t4,$t4,10028 - 0x40b0520 <kill+48>: daddu $t4,$t4,$ra - 0x40b0524 <kill+52>: lw $t9,-27740($t4) - 0x40b0528 <kill+56>: move $ra,$t8 - 0x40b052c <kill+60>: jr $t9 - 0x40b0530 <kill+64>: nop -- John A. Turner, Senior Research Associate Blue Sky Studios, One South Rd, Harrison, NY 10528 http://www.blueskystudios.com/ (914) 381-8400