Have you any media (HDD SD Flash memory) connected ? If so try removing alll those... if media player is scanning for files in the background this can happen (as was pointed out to me on here :) )
WPA2 hack: How secure is your Wi-Fi?
Add Depth Of Field to a photo using Tilt Shift Blur in Photoshop
iPhone tips & tricks
Comment afficher des fichiers cachés sur Mac ?