Thanks Calamity...log attached.
Below are my monitor settings:
#
# CORE SWITCHRES OPTIONS
#
modeline 1
monitor cga
monitor_connector auto
monitor_orientation rotate
monitor_aspect 4:3
monitor_debug 0
monitor_doublescan 1
monitor_dotclock 0
monitor_ymin 0
soundsync 0
cleanstretch 1
changeres 1
redraw 0
#monitor_specs0 auto
monitor_specs0 15250-15700, 49.50-65.00, 2.000, 4.700, 8.000, 0.064, 0.192, 1.024, 0, 0, 288, 384
monitor_specs1 auto
monitor_specs2 auto
monitor_specs3 auto
monitor_specs4 auto
monitor_specs5 auto
monitor_specs6 auto
monitor_specs7 auto
magic_resolution auto
powerstrip 0