Stripes between tiles

hi,
I've am using Inkscape 0.45.1 to try and create tiles. The tiles look nice except there are very ugly white stripes between the tiles. I downloaded Feb 2, 2008 0.46 pre-release and selected the new preference option geometric bounding box (which encloses only the path itself, disregarding stroke width) but still get lines at the edges of the tiles. For example here is a picture of a tile done in the P4M format and a zoomed pic of it. Inkscape is really good. I really like the idea that the tiling is build in but those lines will force me to give up on tiles. Hope there is a way around this. Tiles should work automatically without the white space. In an Inkscape forum another user said "The antialiasing artifacts aren't white lines, they're transparent lines. The problem is caused by the way antialiasing works. In a sense, there's nothing wrong with the SVG file, it's just that Inkscape doesn't render it well. But every other SVG renderer I've tried has the same problem, so for practical purposes it's a problem with the SVG file."
[IMG]http://i270.photobucket.com/albums/jj88/ltattrie/Inkscape/T046_with_stripes.png[/IMG]
[IMG]http://i270.photobucket.com/albums/jj88/ltattrie/Inkscape/T046_with_stripes_zoom.png[/IMG]

Tiling should not produce what looks like grout lines between the tiles.
Thanks.