I did just try an installation here after configuring an HTTP proxy in System -> Preferences -> Network Proxy. Ubiquity did honour it, as I could tell with netstat, strace, et al - but that didn't necessarily mean it wasn't slow!
I feel that a significant improvement could be gained here by making apt-setup pass through apt's progress bar information. I suspect many instances of "hangs" are in fact just random network slowness compounded by apt-setup's lack of progress reporting. -- behind proxy ubiquity won't work https://launchpad.net/bugs/42529 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
