When I try to send a file via bluetooth, when I hit "send file" nothing happens. Using VLC Player, when I click to open a subtitle track, nothing happens, the window that is supposed to pop up so I can select the file doesn't show up. I tried clicking "open file" on the FILE menu on top, and still it doesn't show up. I also noticed that my computer is slower lately, the umbrella mouse thing appears contantly...has anyone experienced this problem before?