Maverick

OK
So far, not such a big deal with the upgrade.

Observations are:

1) Now slower in start up from Mountain Lion

2) Mail has a load of issues - no unread icon in Dock icon, the new mail sound appears sometimes 10 mins after the new mail, to name a few.

3) Like the auto fill in Safari.

4) Safari is not as super fast as they say!!

5) Today, I got a new suprise...when I quit Safari it automatically opens Mail!!

6) Appz quit unexpectantly more than Mountain Lion, which was hardly ever!

That's about it, after a week.