Started happening yesterday, although I have had a gradual slow down in my Mac's performance in the last few months. I thought it was just chrome at first but it has affected every app. Symptoms: -Every app gets pinwheeled by simple tasks (typing, clicking, dragging window, etc) -Some of the time apps continue to run with this dramatic slowness, but often they become unresponsive. I get frustrated and hold the power button as Finder is even affected. -There is a faint, rhythmic noise my MBP is making that sounds almost like breathing or a small spring getting flicked. Not sure if its the disc drive, hard drive, or what. I'm not sure if this is a hardware issue, or if it is possibly malware, or even if my computer needs a good digital cleanup. I have run CCleaner. I did a "disk repair" in disk utility and it said that it was fine. I'm really unsure of what is up. Help please! Thanks in advance.