Warning popups throughout the day

[DavidPotter]

I have the following installation:

Windows Server 2003 + SP1
PHP Version 5.2.4
MySQL 5.0.45-community-nt
WordPress 2.2.3

Everything seems to be working fine. I even have phpMyAdmin 2.11.0 working fine on top of it. However, several times a day I get the following popup on my server whether I'm logged in or not, sometimes 15 or 20 deep or more:

Code: Select all

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Warning
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Unknown(): (null): Unable to initialize module
Module compiled with module API=20060613, debug=0, thread-safety=1
PHP    compiled with module API=20020429, debug=0, thread-safety=1
These options need to match

---------------------------
OK   
---------------------------

The following lines are in my phpinfo:

Code: Select all

PHP API        20041225
PHP Extension  20060613

I've searched and searched on the Internet and can't find anyone who has written about this. Since the module name is (null), I don't have any clues as to which one is causing the problem. How do I stop these popups from coming up?

Thanks,
David

EDIT: I should also mention the PHP extensions I have installed (all installed by the PHP5 installer):
- php_gd2
- php_imap
- php_mbstring
- php_mcrypt
- php_mcrypt_filter
- php_mysql
- php_mysqli
- php_pop3
- php_smtp
- php_zip
- php_zlib_filter

You can see my phpinfo here: http://www.dpotter.net/test.php