There is a page on Meta; http://meta.wikimedia.org/wiki/Changing_username
where users can ask to rename there account to a other name.
It looks like this is not done since of august.
It whould be nice if those users can get there rename.
I have tried to clean out the page. I noticed there are requests from users have have good reason to ask for a change. But also from users who have made extreemly few edits or do a request of a name change that does not make sence, at least to me. Like "OTTo" to "OTTO" or "Sound::jacking" to "Sound::Jacking".
If the reason, or part of the reason why the rename is not done anymore because it is a lot of work ruels can be created to reduse the number of requests.
So that when a good long time editor who used in the beginning a nickname but now whould like to use his real name can get a renaming done.