I just had a disgusting experience with my vacuum. I was trying to vacuum a couple nights ago, and it wasn't picking anything up. I changed the bag, and I cleaned the roller brush thingy. It seemed to be doing better, but still not great. I didn't bother doing anything about it at the time. So, I get motivated to clean again today, and decided to clean my bedroom. After I was done dusting and whatnot, I grab the vacuum and start vacuuming. And now it's not picking up ANYTHING. So I take the front off, to check the bag. It's still on there properly, and obviously not full. I take the bag off... and low and behold... it's totally clogged from the ground up to where it dumps into the bag. EW. So, I had to use a wire hanger and my fingers to dig out all the dog hair and dust that had tightly clumped itself into my vacuum. YUCK. So this is just a warning for everyone: Check your vacuum bags and check them often!