[CentOS] logrotate script not working

Hey guys,

 Got a quick question and I hope this is an easy one!

 In my /etc/logrotate.conf file I have the following entry:

 # rotate all of the apache logs  -- we'll rotate them here
/var/log/mysqld.log  {
    weekly
    size  50M
    create 0644 mysql mysql
    rotate 1
}

And from that I would expect the log to rotate when it reaches 50M in size.
However I just caught that log weighing in at 356MB!!  So how can I get
this log file to rotate when it hits 50MB?

Any ideas, advice and help at all would be appreciated.

Thanks
Tim

-- 
GPG me!!

gpg --keyserver pool.sks-keyservers.net --recv-keys F186197B