Earlier this week we had some really strange errors on the site (detailed description here) that were caused by a mySQL bug which will eventually burn anyone who is running master/slave replication.
I mentioned that you’d need to write a script to prevent this problem from happening to you. The script would delete old, unneeded mySQL bin-log files. In the spirit of stopping this bug from affecting others, I’ve released a generic version of the script… you just have to set up a few variables in the “configuration” section at the top of the script and you should be good to go. For the code and info on how to make it run daily, see the “update” section of the post on my blog. It is, of course, free and open source.
Hope that helps someone!