Help please(details inside)?

May be...

My PS3's fan occasionally makes a very quite clicking sound,but that sound is so quite that I can't hear it except when I put my ear right next to the rear vents,is that sound a bad thing?

i wouldn't worry about it if it that faint just keep an eye on i it in case it gets louder they all make a lil bit of noise listen to a stupid xbox sounds like someone is vacuuming in other room