According to some forum threads, it is a problem with Vista – as for me, I have WampServer 2 on Win 7 here – and PHP PDO extensions; Here’s an excerpt from apache’s error log:
[Sun Mar 21 06:35:50 2010] [notice] Parent: child process exited with status 255 -- Restarting.
[Sun Mar 21 06:35:50 2010] [notice] Apache/2.2.11 (Win32) PHP/5.3.0 configured -- resuming normal operations
[Sun Mar 21 06:35:50 2010] [notice] Server built: Dec 10 2008 00:10:06
[Sun Mar 21 06:35:50 2010] [notice] Parent: Created child process 7844
[Sun Mar 21 06:35:50 2010] [notice] Child 7844: Child process is running
[Sun Mar 21 06:35:50 2010] [notice] Child 7844: Acquired the start mutex.
[Sun Mar 21 06:35:50 2010] [notice] Child 7844: Starting 64 worker threads.
[Sun Mar 21 06:35:50 2010] [notice] Child 7844: Starting thread to listen on port 80.
[Sun Mar 21 06:35:51 2010] [notice] Parent: child process exited with status 255 -- Restarting.
[Sun Mar 21 06:35:51 2010] [notice] Apache/2.2.11 (Win32) PHP/5.3.0 configured -- resuming normal operations
[Sun Mar 21 06:35:51 2010] [notice] Server built: Dec 10 2008 00:10:06
[Sun Mar 21 06:35:51 2010] [notice] Parent: Created child process 8276
[Sun Mar 21 06:35:51 2010] [notice] Child 8276: Child process is running
[Sun Mar 21 06:35:51 2010] [notice] Child 8276: Acquired the start mutex.
[Sun Mar 21 06:35:51 2010] [notice] Child 8276: Starting 64 worker threads.
[Sun Mar 21 06:35:51 2010] [notice] Child 8276: Starting thread to listen on port 80.
Still, it only happens when I enable wp-Typography. Any ideas?