mod_fcgid: apr_global_mutex_child_init error

Hello,

I have a FreeBSD 7.1-RELEASE server on which runs Apache 2.2.16 + mod_fcgid + PHP 5.2.14. After some time (less then an hour) I get the following error:

[Wed Oct 06 13:10:46 2010] [emerg] (2)No such file or directory: mod_fcgid: apr_global_mutex_child_init error
[Wed Oct 06 13:10:48 2010] [emerg] (2)No such file or directory: mod_fcgid: apr_global_mutex_child_init error
[Wed Oct 06 13:10:50 2010] [emerg] (2)No such file or directory: mod_fcgid: apr_global_mutex_child_init error
[Wed Oct 06 13:10:52 2010] [emerg] (2)No such file or directory: mod_fcgid: apr_global_mutex_child_init error
[Wed Oct 06 13:10:54 2010] [emerg] (2)No such file or directory: mod_fcgid: apr_global_mutex_child_init error
[Wed Oct 06 13:10:56 2010] [emerg] (2)No such file or directory: mod_fcgid: apr_global_mutex_child_init error
[Wed Oct 06 13:10:58 2010] [emerg] (2)No such file or directory: mod_fcgid: apr_global_mutex_child_init error

In the same time, Apache won't accept any new requests and after a few minutes dies.

Does anyone have any ideea on why I get this error message?