What's this "clicking" noise I hear when surfing the net?

Q: What's this "clicking" noise I hear when surfing the net?

A: The "click" is the sound that Microsoft Internet Explorer makes when you click on a web link. If you wish, you can turn this feature off in the Control Panel. In Windows XP, open the Sounds, Speech and Audio Devices (it's just Sounds & Multimedia in Windows 2000), then Sounds and Audio Devices, then on the Sounds tab, scroll down to the section for Windows Explorer. Click the event called "Start Navigation," and change the setting to "none" from the dropdown box. Click OK to apply the change, and the clicks are gone.

via Skype.com