I had some ETH stored on the "old" blockchain. I bought them during all the DAO publicity, but never actually bought any part of the DAO contract.
The client, if you are un-ware, is a massive disk space hog. Because of this, I stopped running it.
Now, because of the hardfork, in order to get my value back out of the old chain and into the new one, I have to attach an external disk to my computer, and use it to store the chain.
Can I transfer out of the old and into the new chain indefinitely? I have no idea (maybe I'm just bad at google). Can I even transfer now today (once the client finishes syncing [it has been going literally all day today])? Don't know.
I get the why of the hardfork, and I'm not saying that I'm going to stop supporting ethereum, just venting a little bit.
Turns out new technology is new! And sometimes corner cases like mine haven't been accounted for!