[magick-users] resize problem with transparent gifs

[alexander]

hi there,
i have a question regarding the resizing of gifs with a transparent color.
i´m using rmagick to do this, but the convert program in the console 
gives the same results.
i have gif images that contain antialiased text with the backgroundcolor 
set transparent.
if i resize them with foo.resize(0.25) while keeping the format as gif 
the results are perfect in every imagemagick below 6.2.2 (i think.. 
haven´t tested them all) but with every version above 6.2.2 the 
antialiasing is totally broken and the images look far from good.
so my question is: is there any way i can emulate the old behaviour with 
new imagemagick versions?
thank you all very much
alexander