Hey. I've been trying to build speed for quiet a while. It's been about 8 months of 3-5 hour practice every day, but no matter how many times I do an exercise, when I start building up the speed on the metronome, I always hit the same block, and can never advance any more. I've been learning quiet a few songs lately, but always have to stop/skip parts because of my lack of speed.
Here's some exercises I've been working on:
http://www.guitartricks.com/lesson.php?input=1423
http://www.guitartricks.com/lesson.php?input=10918
http://www.guitartricks.com/lesson.php?input=8394
http://www.guitartricks.com/lesson.php?input=9963

Any tips on building speed/how to practice etc. is much appreciated.