On your next system, preferably a popular one like the SNES or Playstation, try importing only boxart (front and back) and gameplay images, you will find it goes much much faster.
Of course it could be the server was being slow for whatever reason at the time but I can tell you with great certainty that grabbing fanart will slow the scraping down immensely, some of those images are large png format.
Over the last few days I have been putting together a streamlined install of LB, importing and scraping only boxart and screenshots and it didn't take all that long to do. I also only have a 12 Mbit internet connection.