Stitching and flickering, can't properly render from a distance

In minecraft I've noticed stitching between blocks and flickering blocks from a distance, it seems like minecraft currently don't know how to render properly.
I've checked on multiple computers and versions, computers which I've tested on:

iMac (OS X) ver. 10.8
Windows 7 32bit x2
Windows 7 64bit

These computers has ofcourse different graphics card manufacturers, Intel, AMD and Nvidia, the problem exists in all different operative systems and graphics cards.

They all have the same problem with the stitches between blocks, all computers also have flickering if you're looking at for example leaves from a distance, walking into a forest and seeing all the flickering is really ugly and annoying, and it's ruining the game experience. Note - all blocks actually are flickering from a distance.
I've reinstalled my entire computer due to this bug, since I thought it occured due to graphics drivers or something wrong with my hardware, but it wasn't, and I wiped my computer for no reason then.. except research about this bug, oh well.. When I checked on different operative systems and 32 & 64 bits, my conclusion was that something in Minecraft is where the problem is located.

Minecraft's graphical issues seems to be these at the moment, which I've noticed so far:
*Stitching between blocks
*Flickering blocks from a distance (with flickering I don't mean that they disappear and reappear)
*Minecraft doesn't know how to render textures properly, from a distance

I've tested with optifine and not optifine, no difference.
These graphical issues are NOT caused by graphics cards / drivers, since I've tested it myself...

Please fix this, I don't want to waste ANY more time to this, I've literally spent 20 hours + trying to find a fix, researching etc.

Is Mojang aware of this?