gnome2/x11 slow after optimization!

I have a core2duo laptop on which out of curiosity I decided to
recompile x11 and gnome2. After a few hours when it was ready, I found
gnome crawling painfully slow. I'd click a menu and it'll take 2
seconds to appear, I try running terminal, and it take 10 seconds to
come up, try typing and keyboard lags by 5-6 seconds.....what I find
is really cool is that the ports installed by FreeBSD release are
waaaay faster....here's my make.conf: (do you see a culprit?)

KERNCONF=WAV
NO_WERROR=YES
WERROR=-Wno-error
#NO_CLEAN=yes
#NO_CLEANDIR=yes
CPUTYPE=core2 #nocona
ARCH=core2 #nocona
MACHINE=core2 #nocona
MACHINE_ARCH=core2 #nocona
CFLAGS= -O3 -pipe -mtune=core2 -m128bit-long-double -mfpmath=sse
-ftree-vectorize
CXXFLAGS+= -fconserve-space
BDECFLAGS=      -W -Wall -ansi -pedantic -Wbad-function-cast -Wcast-align \
                -Wcast-qual -Wchar-subscripts -Winline \
                -Wmissing-prototypes -Wnested-externs -Wpointer-arith \
                -Wredundant-decls -Wshadow -Wstrict-prototypes -Wwrite-strings

#CFLAGS         +=      ${BDECFLAGS}
COPTFLAGS       =       -O -pipe -mtune=core2 -m128bit-long-double -mfpmath=sse
BOOTWAIT        =       0
BOOTWAIT        =       0
DISABLE_SIZE    =       YES
FETCH_CMD       =       /usr/local/bin/wget -c --passive-ftp
ftp_proxy=$ftp_proxy
# added by use.perl 2008-08-20 15:06:56
PERL_VER=5.8.8
PERL_VERSION=5.8.8