I too am having problems with the slowness of the site. I used to watch all the videos in hi-res, but recently I have been forced to low-res because of the looooong wait for download. Even with lo-res the download seems to stop for long periods. I thought it may have been that there were a lot of ppl accessing the songs page but since it's currently 2:30 am in LA and 4:30am in NY, I don't think that's the problem. But then the same thing happens if I go to the techniques page etc. Sometimes song tutes will show completely downloaded but end half way through.
I have deleted my internet files, run defrag (didn't need it), reset my internet connection and changed the MTU value on my router.
I have also run 3 different speed tests which showed 15Mb, 15Mb and 13.3Mb speeds so I don't think it's my internet connection that's the problem.
Finally, I am not having any problem watching hi-res videos on other sites (YouTube, Lick Library etc)
Something has definitely changed here.
I am running IE7 with WinXp.