ken_b - 10:40 pm on Dec 5, 2012 (gmt 0)
Initially it was a clean install on a new machine.
But I was so frustrated I uninstalled and installed 16.0.1 thinking that might be better. Unfortunately, that came with an "instant Upgrade" to 17.0.1 and i couldn't find a way to get the old version without the instant upgrade.
So I uninstalled the whole mess again and reinstalled 17.0.1.
[added] I may have been too optimistic, I just now open FF again only to find that it had somehow installed the Yahoo! Toolbar without asking.
I deleted it and restarted the machine and reopened FF, no Y! Toolbar. We'll see how long that lasts.
So far, so good, not very hopeful though.