Has anyone had the trouble with updating to 1.2.3/4?  When I update my 1.1 world, some of the things I've built are reverted back to some older stage.  For example: I've converted all the cobblestone blocks in a village I'm in to stone bricks, but when I update my game, Anvil turns all the buildings back to cobblestone.  If I convert my world back to 1.1, all the blocks go back to stone blocks!  Its so weird.
I don't think this was a problem with the 1.2 pre-releases, but I can't remember, I didn't test them out too much.

If anyone has some ideas, that'd be nice.   Thanks!

Thanks.   I needed the customary first post to edit my profile and such.  Now I'm off to introductions.

My 1.1 world is weird, because some of the things I've built still exist, but others vanish or revert to old stages.  This also affects the Nether.
Also, what are image limitations for this forum?

If the image is big, you can put them in a [spoiler] or do [img width=##] to scale it down. Or you could link to them, as you did there

The way to go with big images here is usually to make sure they're in spoiler tags. That way they're not in the way.

Edit: Reply-Reading fail

The Brickhouse. Brickside. Brickroll.

Flan's mod is AWESOME.

But now, after installing, my minecraft crashes randomly every few minutes.

Something very very weird happened today with my character. I may or may not use Minecraft SP, and today I entered a different username, because my friend thought my username was hard-ish to type. Here's what happened to my character:

Don't pay attention to the TMI, just the little character shown in the Inventory window. What the heck? I never changed my character, and other people I play with look exactly the same. My char.png file hasn't been modified either! What happened, and how can I change it back?

So your character turned pink... is it like false colour or something? Or is it some other outfit design altogether?

I'm tempted to spend the whole of today playing minecraft. But... I .... Must ... Not!!!