To follow up on myself, the crashes I see are not obviously related to
font handling. The server often crashes in FontFileOpenFont, but I see
similar crashes in other parts of the code (such as in miLineArc).
What they have in common is that the following frames are garbage. Can
this be a result of the caught signal, or does it suggest a trashed
stack?

#5  0x8107927 in FatalError (
    f=0x81f05a0 "Caught signal %d.  Server aborting\n") at utils.c:1399
#6  0x8088c43 in xf86SigHandler (signo=8) at xf86Events.c:1085
#7  0xbfbfdfdc in ?? ()
#8  0x81ae723 in miLineArc (pDraw=0x89faa80, pGC=0x895ca00, pixel=0, 
    spanData=0x0, leftFace=0x0, rightFace=0xbfbfd660, xorg=390, yorg=729, 
    isInt=0) at miwideline.c:1090
-----
#5  0x8107927 in FatalError (
    f=0x81f05a0 "Caught signal %d.  Server aborting\n") at utils.c:1399
#6  0x8088c43 in xf86SigHandler (signo=8) at xf86Events.c:1085
#7  0xbfbfdfdc in ?? ()
#8  0x827b471 in ?? ()
#9  0x81195f4 in FontFileOpenFont (client=0x8937100, fpe=0x87fe560, flags=0, 
    name=0x89f8000 "-*-helvetica-bold-r-normal-*-21-*-*-*-*-*-iso8859-1-1\020\235\b", namelen=51, format=512, fmask=31, id=20971589, pFont=0xbfbfd944, 
    aliasName=0xbfbfd930, non_cachable_font=0x0) at fontfile.c:429

Under what circumstances do you get a SIGFPE (signo=8) on i386?

/Johan