[chrishajer]

I recently ran into a problem with eaccelerator installed from source:

When you update PHP, Apache will not restart since eaccelerator was compiled with an earlier version of PHP, and Apache can’t load the eaccelerator.so binary. If Apache won’t start, maybe this is why. Apache didn’t give any good messages at all, but php -m on the command line showed a problem with the eaccelerator binary being compiled for an earlier version of PHP. So, just recompile, reinstall and restart Apache.

Hope that helps someone.