I got my clutch changed just over 30,000 miles ago, as it was slipping badly in several gears. It was a 3-piece clutch kit (so I was told) by a reputable garage. I occasionally can hear a sort of "spinning" sound when I depress the clutch pedal to the floor as of this morning during my drive to work, however it disappeared when I used my car this afternoon again. Whilst the symptom is present, when putting it into gear, the engagement is aggressive and instant. I have a manual transmission. The symptom usually stays for maybe 5 minutes and then disappears for several days.
What could this be?