WebGUI hanging occasionally …

[dhatz]

On same (rare) occasions, when using the webGUI, it will appear to hang (no response, the webpage seems to be loading forever) and it won't come back even after using option '11' (Restart webGUI) from pfsense console. The only way to fix it is to killall php/lighttpd and the /etc/rc.restart_webgui

Any suggestions how to go about to troubleshoot this?

[cmb]

rate hanging it? That's the only thing I've seen of late, a 'killall rate' also brings it back to life.