[matplotlib-devel] Bug in Basemap

All (with a special hello to Jeff W.),
I'm running into a problem with the latest basemap (r6355), illustrated in the 
following. Looks like the resolution 'i' causes a TopologyException

GEOS_ERROR: TopologyException: found non-noded intersection 
between -42.7171 -2.56422, -42.7313 -2.57589 
and -42.7059 -2.58961, -42.7475 -2.56714 -42.7313 -2.57589

Note that it works at lower resolution, and works also when using 
basemap-0.9.6.1

_____
use_new = False
if use_new:
    from mpl_toolkits.basemap import Basemap
else:
    from matplotlib.toolkits.basemap import Basemap
(llcrnrlon, llcrnrlat, urcrnrlon, urcrnrlat) = (-86.50, 30.50,-80.00, 35.01)
for resolution in (None,'l','i','h'):
    basemap = Basemap(projection='aea',
                      llcrnrlon=llcrnrlon,llcrnrlat=llcrnrlat,
                      urcrnrlon=urcrnrlon,urcrnrlat=urcrnrlat,
                      lat_1=29.5,lat_2=45.5,lat_0=23,lon_0=-96,
                      resolution=resolution)
    print 'resol',resolution
_____


As a side note, would it be possible for the config script to search whether 
GEOS is installed in /usr ?

Any suggestion/cooment welcome,
Thanks a lot in advance
P.