My average Q.S. recovered to about 70% of what it was before the "bug" hit and seems to have stabilized at that level over the past few days. That seems to be consistent with what other people are repoting across various forums. What is interesting, however, is that I'm getting plenty of clicks from keywords which are significantly below the first page minimum bid. As long as that continues the QS metric is quite meaningless atm. So we certainly haven't witnessed a roll back of the QS update. What we most likely have been exposed to is a botched roll out of an update. But with Google not giving us any real information it's all just speculation.