wtf it might be just a bad day or could be a no. of things. Try closing LW & re-opening it. If that doesn't help, try deleting your LW Preferences folder whilst LW is closed; instructions here:
Fixes for Limewire & see if that helps. If still problems then go thru this thread very carefully & try out all the ideas. Also try a file from here:
http://www.magnetmix.com/video.shtml & see how fast it is.