It's that little "tick" sound you hear when you press an icon on the home page, or hit something on a menu, or click a link, etc. Mine is suddenly about 1/3 the volume it used to be. I checked the settings and I can turn it off in Sounds & Display...Audible Selection but I don't see any adjustment for the volume of it. The only thing new in the past few days is that I got both the desk dock and car dock (the "quiet tick" problem is when it's not docked though). Rebooted with no luck. Any ideas welcome.