Failures:
Slow login time: The first update helped some, but it's still slow.
Crashes frequently.

Incorrect L$ balance displayed in upper right of screen: Drops the comma and subsequent digits if you have a balance over L$1,000, and are on a Mac. Account history shows the correct balance. Haven't yet tried to buy anything, so I don't know if it affects my ability to spend L$.
Incomplete rezzing of surroundings: The one time that I was stable enough to climb into my hot tub and relax with a friend, the walls of the building I was in kept un-rezzing and coming back again. Mostly they were un-rezzed. The hot tub and our Avatars were nice and sharp, but the walls, which should be translucent shoji screens, were untextured grey translucent panels.
Slow world rez: We teleported to somewhere else, blaming this on lag, and it was even worse there - the world wouldn't rez in enough to be at all playable. Everything remained fragmentary and transparent. Store vendors were impossible to use. This morning I was on for 10 min or so and the world around me never did rez in. It was actually worse than yesterday.
Teleport problems: A friend was unable to offer me a link to teleport to their location. But I was able to teleport to the nearest telehub for a store located in Find.
Inaccurate mapping fix on a friend: At one point my friend teleported away, to a different sim, and was unable to offer me a teleport to join them. I went to their profile and told it to map them for me. The location fix that it gave me for them insisted they were in the center of the sim I was in, and about 20 M below the surface of a lake.
In Mouselook, even when 'show Avatar in Mouselook' is NOT selected, I see fragmentary bits of my Avatar's 'furry avatar' attachments when I move (my tail and muzzle). This was also an issue in the 1.6 release, but wasn't as bad in the older release.
Successes: (Yes, there are a few)
Multi-select drag and wear from Inventory worked. Yay!
Can see the Classifieds. Searching was extremely slow, but at least they were there.