I installed Bitcoin Qt, and it began updating the blocks extremely slowly. After several hours, I restarted the program, thinking it might speed it up. Now, it appears completely stagnant; the icon in the bottom right is now two monitors and an X, rather than the previous icons which denoted the rate of the update.
How can I get it to update the blocks? I'm waiting on some transferred funds, and this is starting to be a real hassle.