I just wanted to thank @Ralle for his fix. I switched from GD to ImageMagick a few days ago and also had the issue that the transparency got lost when pictures needed to be resized. After installing his addon this is issue is completely gone now. Thank you so much for that! :)
Is there a way to customize the latest posts sidebar so that you only see threads in there that you follow? I remember some staff saying there is a way to customize these boxes/these feeds so that you only see threads/forums you're interested in.