Your comments

I confirm there's an issue somewhere, my Ajenti consumes now 850 MB of ram.
Thanks. It's better now but I still think there are some memory leaks. Ajenti is currently eating 440mb of ram on my server which is unusual.

Let me know if you need some logs or whatever to troubleshoot.

Thanks ! I updated Ajenti and I confirm it's fixed ;-)

Would be nice to be able to set it on Widgets like CPU usage, immediate traffic & I/O...

I'd like also to be able to edit the virtual host with the same way it is implemented today. Products like Owncloud, Seafile or even Ajenti have sample virtualhosts you just need to copy / paste and a notepad is more convenient in this case.