Apache with php stopped working after upgrade

[map7]

I've just upgraded from FreeBSD 6.2 through to 7.0 (first upgrading to 6.3)

As part of the upgrade you have to recompile all ports, which I've done.

Now my apache doesn't start if I have the following php line in:
LoadModule php5_module libexec/apache22/libphp5.so

I get the error in my httpd-error.log
[Fri Nov 07 15:25:46 2008] [warn] Init: Session Cache is not configured [hint: SSLSessionCache]
[Fri Nov 7 15:25:47 2008] [apc-error] apc_fcntl_lock failed: Invalid argument

What have I done wrong?

If I take out that php line in the httpd.conf file apache will load fine and works with html and my ruby on rails project.