From owner-freebsd-stable@FreeBSD.ORG  Thu Mar 20 07:16:08 2008
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Date: Thu, 20 Mar 2008 08:16:05 +0100
From: Dominic Fandrey <kamikaze@bsdforen.de>
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Subject: moused freezes Xorg - caused by compiler bug
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I have long been annoyed by the problem that Xorg is frozen if I use moused, 
unless the mouse is in movement. Just imagine you type something and it only 
shows up when you move your mouse. Or if you watch a video ... you basically 
have to keep the mouse in movement all the time.

I am/have been using the following CPUTYPEs on different machines:
pentium4 - not affected
pentium-m - affected
core2/nocona - affected

I just had the idea this might be an optimization problem and I rebuild 
src/usr.sbin/moused with CPUTYPE=athlon64 and it works.

I've put the following into my make.conf:

# moused bug workaround
.if ${.CURDIR:M*/usr.sbin/moused}
.if defined(CPUTYPE)
.if ${CPUTYPE} == core2
CPUTYPE=athlon64
.elif ${CPUTYPE} == pentium-m
CPUTYPE=pentium3
.endif
.endif
.endif