posted on Sep, 5 2008 @ 09:54 PM
As previously mentioned: Spybot is your friend. I've never heard any clicks on this site using FF3 or IE8...
However my friend once reported random clicks, and my first question was "Are your speakers on?", to which she replied "no... they're off..."
Turns out the clicks were just her hard drive protesting at something. A few months later, I had to replace that drive.
Other things that click can include:
Pop Up Blockers (usually has a visual notification)
Firewall notifications (mine clicks every time it blocks an unwanted connection)
Problems with the sound card drivers.
My shoulder (damn injuries!)
I hope that was of some help to you. If it wasn't you are entitled to a full refund for the time wasted reading this, payable in clicks.