Hello, I just bought my first MBP today (13-inch with the optical drive) and I couldn't be happier. I do have one question: will my computer run ok if I download OS Mavericks? It is a silly question, but I read some Macs run slower after installing it. Also, is there any command similar to "Shift + Delete" in Windows, to delete files completely? Any help for this newbie will be appreciated. Thanks!