So some reason, which drives me insane, my hard drive (boot drive) runs out of space every time I use the computer. Let me explain...if I reboot the computer, it shows ~21GB available. I open some programs, start doing some work, and it starts to go down. By the end of the day, I'm down to under 1GB and a lot of the times I get warning about being out of memory and I have to restart the computer to free up space on the hard drive. I don't know if I have some settings all screwed up or if it's a virus or what. It's a mac pro with 16GB of RAM, 120GB SSD boot drive and a 2TB internal HDD for storage.