I am not sure if this could be a virus, malware, etc or a hardware issue. The first thing I noticed was WMP 11 hanging for about 4-5 seconds upon opening up a music file. Another thing I noticed is initiating downloads through Firefox makes the browser hang for about 4 seconds. My HDD is constantly making noise as if a program or something is loading or running in the background. I check the processes in the task manager and nothing seems to be out of the ordinary. I have done system scans with my security software and nothing was found other than tracking cookies in Firefox. Any help would be greatly appreciated.