My client was recently updating her website and cut and paste some text that included a link to an ezobject that had been deleted from the system. All the pages that she had edited so that they contained this link then displayed this message.

"Fatal error: eZ publish did not finish its request
The execution of eZ publish was abruptly ended, the debug output is present below."

Turning on debug didn't show any errors just a few harmless looking notices.

In general the system is very robust against malformed URLs. So I was very surprised to see this error.