I've started having a strange issue on my Gateway PC when I save or open word and excel documents. It's intermittent, so I haven't been able to recreate the sound for anyone else. Basically, when I click on a file to open or click the save icon in my ribbon (Word, Excel 2007) the hard drive will emit a low "bloop" sound almost like a water drop sound effect. It is not coming through the speakers, it's coming from the hard drive itself. It seems to only happen after I've had the document open for a period of time and made significant changes. Does this sound like spyware?