Okay, this is seriously going to be the last post, and I'm hoping at least someone still checks this every now and then, otherwise I'll look like some sort of crazed forum poster.
Anywho, with all the updates to Minecraft, I don't think it would necessarily be a bad idea to start a new seed. Course, we would lose everything, obviously, lol.
But that's just my opinion. I will go ahead and say I will most likely start playing in my Linux environment since Minecraft does run faster there, so I've been thinking about starting over, anyhow. But now that I think about it, I can just upload my world to MediaFire and re-download it. Hmmm...