I have exactly the same problem…!
I have backed up some tables from the database (collation utf8_general_ci) just in case I screw something up -which I did- and when I try to import the tables from the backup all the characters are symbols!
The problem I think lies in the backing up proccess… The database exports the .sql file in a I-don’t-know-what encoding! I tried opening the .sql file with all sorts of processors (including notepad++) but the characters appear as symbols…
Is there a way to fix it or should I have to put all the data by hand again? 🙁