Cannot load php_pdo_mysql

Hi folks,

After upgrading from php 5.2.? to php 5.2.5 I am now getting two errors I never got before when surfing around our wiki. The first just shows up in the error log:

[31-Jan-2008 10:38:48] PHP Warning: PHP Startup: Unable to load dynamic library 'C:\php\ext\php_pdo_mysql.dll' - The specified module could not be found.
in Unknown on line 0

However, the extensions dir is correctly defined in the php.ini file, as is evidenced that it can load other extension from that very same directory. For example, it can load php_mysql.dll just fine. , there do not seem to be any negative impacts on the users of the wiki (due to this error) although this definitely bothers me as an admin.

Any suggestions as to why this might be occurring?

The second error er No, I'll put that in a second email.

Robert