Thread:Project:Support desk/Proxy Error with Page Titles 51 Characters/reply

I haven't seen anything like that but I have seen that Apache 2.4 has some subtle differences.

The proxy bit makes me wonder if you're using mod-proxy-fcgi which wasn't available in Apache 2.2.

To provide any futher help, we need to know more about your Apache configuration and PHP config. How have you installed them? What OS are you using?