If you can't read it, that's Penny Arcade trying to play an embedded video. It's not going well. The red underlined section is Task Manager, showing that Firefox was using 89% of the processor's resources.
I'm no expert, but I don't think it's supposed to take 90% of processing power to surf the web. Another clue might be that I can type entire lines and even paragraphs into blogger's post window and then walk into the kitchen for a soda--and not all of the stuff I just typed has appeared yet when I get back. Thank whoever for Notepad!