Yup, got in with password admin, thanks.
My S5 appears to hash 10-20GH faster with the 4.9.0 real cgminer fork install, both in the gui and pool side. The error rate also dropped from 0.04% to 0.03%, which is probably what results in the increased hash rate, so I would say that is a significant improvement. I run the S5 at 400 freq.
I moved my miner around a bit today but I think I noticed a better hashrate too even at default 350Mhs.
I've just the modification again (I have it save in a text file so I just have to copy/paste it), and I'll monitor it.
The nice thing on the S5 is that it tells you which version it's running on the "system" page of the UI, pretty neat if you're not sure or if the system has restarted without you noticing