Freek Schoenmakers

Here's an idea: Reopen this issue and don't mention worldpainter, just show the vanilla way to do it. That might get them to respond.

This bug still persists in 1.5 pre-release. I guess the texture is being rendered smaller than the block is.

13w11a Did NOT fix this bug. It is still present, and it doesn't seem to have become less. Maybe slightly, but it is still there, just as notably as before (just visit a taiga biome, it's horrible).

I checked the forums and it seems to happen to all kinds of video cards, including nVidia, GeForce, ATI, AMD, Catalyst, etc...

@Dinnerbone,
Sorry to break your day, but this also happens on earlier versions than 1.4, before the unstitched textures.
With that I mean just the lines between blocks, not the pink water horizon caused by AA/AF, which I have turned off.

So for some reason this is happening on (and I checked) all versions since Beta 1.8. I haven't checked the versions before that version.
I didn't have this issue until recently, when it suddenly popped up. I tried all the different AA/AF settings in the control panel, including factory settings etc...
I do not have optifine installed, but using optifine however does seem to reduce the size of the lines.

Confirmed, very annoying on maps that require mob heads to play properly, such as Sethbling's Super Smash Bros.
Removing the hat layer on your skin is a temporary solution, but I can't use it, because my skin looks really weird then.

Confirmed in all snapshots and versions that contain mob heads up until 13w09a.