I was having problems with starting up BL2 and BL:TPS. So I looked in the App Store and found out that a new software has came out about 20 days ago. Of course, the Mac never told me about this. I tried updating it and it did not take as long when I upgraded to Mavericks. From the pictures I saw of Yosemite, it looked terrible. Except, when I started using it, it wasn't as bad as I thought. Again I was disappointed with the new dock style, but this time I was able to change it to a dark color. And I did realize that the new dock style does in fact make the icons more visible. I also noticed they changed the font on the task bar and on most built-in applications. I don't mind this at all, but I will admit the older font they used was a bit hard to see, the font now is more smooth and easier to read. Later I chose to look around in settings to see what I could change now. I was able to change my default browser to Firefox like it should have been 194287 years ago. I was bored so I pretty much looked all over the place, and realized the Mac has had the firewall off ever since I've had the computer. That was a problem, so I turned it on. So far I've had no problems with it and it's definitely better than Mavericks. But updating did not fix the problems with BL2 and BL:TPS. If you're wondering what's wrong, whenever I open one of them, Steam will freeze for a minute, then it will think that the accessibility setting for Steam is off and it asks me to turn it on. When I go into it, it clearly shows Steam being allowed. Once the game's open, and Steam tries to activate the overlay, the entire computer freezes for another minute, then comes back. Gameplay has no lag, but whenever I try to watch a cut scene, the game freezes, then the whole computer again, and will crash. Sometimes the Mac will be frozen entirely for 5 minutes before the game crashes. I doubt updating the computer would fix it, but I still wanted to try it. It's most likely Steam that's causing the problems.