For people who got bitten by LJ's bug that was causing duplicate content in your account after importing content from LJ, we've finished the tool that will help you clean up your account without having to delete each individual post or comment.

This tool will remove all imported content from your account, not just duplicate imported content. (Basically, there's no way for us to tell which version of a post or comment is the 'original' and which is the duplicate, so we need to remove them both and let you re-import from scratch.) Once you've removed all imported content, you can then re-import your content from scratch.

Warnings: This can't be undone. Once you hit the button to delete all imported content, it can't be stopped. It will remove all imported content from your account, no matter how long ago you imported it. If you've deleted posts or comments on LJ since you first imported, they can't be re-imported into your account on Dreamwidth after you remove all imported content.

Reassurances: It will only touch imported content (with the exception of: If an entry was imported, and then someone commented on that entry on Dreamwidth, running this tool will delete that entry and all associated comments, including any comments that were made on Dreamwidth.) We've tested it pretty heavily (although there's always a chance for weird bugs).

If you want to use the tool to clean up your account, it's here.

EDIT: Also, I forgot to mention: if you're one of the people who were affected by the issue with the system telling you that your comments had imported successfully but the comments weren't appearing in your account, you can now try your import again, and it should work this time!