I’m running Plesk 8.2 on windows 2003 with php 5.2.3 and MySQL I was getting the Error in my_thread_global_end(): 1 threads didn’t exit. I just went and got the PHP 5.2.1 version of “libmysql.dll” (Windows Binary) in http://www.php.net/releases/ and overwrite my local copy. Worked great!!
FYI- I did a search and found other version of “libmysql.dll” , make sure to only replace in the php folder.