Well I went over to the Apple store and used their T-1 to download the combo 10.2.5 update and all the other updates from just 10.2 plus Safari beta 2. I have a basic set up no 3rd party anything at this time, 667 Ti with 768 ram that I have only had for 1 month. I ran permissions before I started to play and the only issue I have is with Safari beta 2 that the down scroll button does not always work. When this happens all I have to do is back out of Safari and reopen it and it's all fine again. I have not played with Auto fill or tabs yet! I used it for about 4 hours yesterday and did not run into any other issues, I will keep my fingers crossed. bill