My Slic3r config as of testing 0.5.5, OSX Lion

config.ini

bottom_layer_speed_ratio = 0.3
duplicate_distance = 6
duplicate_x = 1
duplicate_y = 1
end_gcode = M84     ; disable motors
filament_diameter = 1.81
filament_packing_density = 1.056
fill_angle = 0
fill_density = 0.4
infill_every_layers = 1
layer_height = 0.2
nozzle_diameter = 0.35
perimeter_feed_rate = 30
perimeter_offsets = 3
print_center = 60,60
print_feed_rate = 45
retract_before_travel = 2
retract_length = 1
retract_lift = 0
retract_restart_extra = 0
retract_speed = 18
rotate = 0
scale = 1
skirt_distance = 6
skirts = 3
solid_layers = 3
start_gcode = G92 X0 Y0 Z0 E0 ; reset distance
temperature = 178
travel_feed_rate = 100
use_relative_e_distances = 0
z_offset = 0