OP:
I suggest that you first go into the software update dialog shown in reply 6 above, and UNCHECK EVERYTHING.
You DO NOT WANT "automatic updates" going on behind your back.
At least I don't.
I don't want ANYTHING "updated automatically" before I know what's going to happen.
Having said that, I suggest that you then go to the dialog shown in your reply 3 above, and UNCHECK everything first.
THEN... check and update ONE ITEM AT A TIME.
Let it install, then check it -- if it looks good, check the next one and install that.
If you "update all", and something goes wrong, it may be difficult to ascertain WHICH update is causing the trouble...
Aside:
As is probably obvious, I don't care all that much about "updates" to "the latest and greatest"...