One month ago I set up a new MySQL 5.5 db4free.net server instance, after the old instance started to keep crashing. Since then, the former user database server has run on port 3307 to give people a chance to rescue their data, while the new MySQL 5.5 instance started completely from scratch.
However, most of the time, the 3307 server was down and I doubt that many people had a chance to get a copy/backup of their data. Now I updated that server to MySQL 5.5 as well. It’s too early to tell whether or not that will increase people’s chances, but it may be worth to give it a new try.