1.5 is going to have hd texturepack support right? edges on high resolution-texturepacks have a really ugly edge around it. before 1.5 snapshots you could use MCpatcher HD fix to fix this bug, but now its not compatible anymore.

(texturepack used: faithful32x32 http://www.minecraftforum.net/topic/72747-faithful-32x32-pack-updatemore-mods-146/)