WordPress allow dashes
This tool is no longer needed, according to the WordPress bug tracking database and their head developers. However, if you experience this bug, feel free to use this tool.
Didja notice that WordPress 2.0 and higher won’t let you edit your own profile if your user name has a dash? Since it’s a very small bug, and you and I aren’t allowed to edit WordPress code, I took the liberty of making a plugin which fixes this very bug.
Here it is. Download WordPress allow dashes.
There’s not much to do besides unpacking the archive on your WordPress plugins folder, and activating it through the Plugins tab on your WordPress administration console.