This is gonna be kinda long! sorry! First I updated my iTunes so that I could download a video because it said I needed to. After it downloaded, it said that I had to update Safari to access the iTunes store. I tried to update Safari, but then it said I had to do a Security update. So, I went ahead and tried to update it...Right when it's almost done uploading, it says that there was an error. I tried to update it at least 4 times. I thought, "Okay, I'll do this later" so I turned off my computer. When I turned it on, I put my mouse on the bottom to make the dock appear but it didn't! I tried everything but nothing is working to make it come back! Then I tried to open the Disk Utility but it won't...And lastly, I can't drag items! For instance, if I want to save a pic on my desktop, it won't let me drag it to the desktop. Oh yeah...it won't let me minimize anything, either PLEASE! If anyone can help me fix this I will greatly appreciate it!