I have been running 3.9.9 since I downloaded it a day or two agao. Earlier his evening, I had to reboot, and when my system came up again, 3.9.9 couldn't reconnect. Kept twitching at Quality: Poor for a couple minutes before giving up. Connections window showed only two or three connections which eventually died. I dropped back to 3.9.2 which reconnected quickly. Relaunched 3.9.9 but still no luck. Something broke after 3.9.3 but I can't tell what.

I encountered this a couple times already with 3.9.7 and 3.9.8 but dropping back to an earlier version than returning to latest beta fixed things. This time it didn't.