found that question really often without solution… then I had a look at access restrictions for akismet.php (ftp).. changed them from 644 to 744 and it validated the api key.
hope it helps
hi there,
I had the same problem and after one hour of searching without any hints I had a look at the access restrictions for akismet.php.. changed them from 644 to 744.
and now it started working, cool
hope it helps someone
and if so, please tell us here..