As you can easily see when you visit LessWrong.com, the site transfer is complete, and we are now on the new URL. The data import will run for the next few hours, and by tomorrow morning everything should be complete.
Let us know if you run into any problems, find any broken links, or anything of that sort!
Yup. For what it's worth, ISTM that this is likely a client issue, although it's hard to tell.
The thing is that new comments of the "LW2" sort always seem to show up immediately, so that's a bit weird.