Pretty cool. The rectangular select tool doesn't work on my system (Chrome 9.0.597.107, Mac OSX10.6). I see tons of visual artifacts where it hasn't repainted

Pretty cool. The rectangular select tool doesn't work on my system (Chrome 9.0.597.107, Mac OSX10.6). I see tons of visual artifacts where it hasn't repainted correctly. See http://grab.by/9hPv http://grab.by/9hPv