Here is the story. I like to download some YouTube videos of my PC such as my favourite YouTube files. Then I came across RealPlayer which downloads and plays YouTube files (flash files). So I was like cool.. so I thought it would be cool if they had something like this for the Mac. So I went onto my MacBook and found RealPlayer 11 for OS X. And I downloaded it. And was able to watch flv files.. so then I shutdown my Mac for the night and when I tried to go back on it.. the startup took forever, then my background wouldn't load, it was just a blank blue screen, after about 3 mins only the WI-FI, Battery, and Time Icon showed up..the rest of the menu bar as not there!! I was able to view my doc and open a file, but then I wasn't able to close it. Now when I turn on my Mac all it does is that start up sound and stays on that white screen. WTF happened? It's 2:15am here.. so I am going to bed.. but I will read your replies in the morning.