Why am I suddenly getting audio popping?

AMD dual core 5000+, 32-bit os, Windows XP, 4G.
 
Sonar 8, Edirol UA-101
 
It worked fine until recently and now I'm getting pops in the audio. Why? Why did I ever give up my reel-to-reel?

you gave up your reel to keep up with the times.a little more info we can help.but with what your giving for info its going to be tough

Thank you JohnnyV. I defragged the hard drive (I can't remember when I did it last) and then shut off the McAfee virus program that runs a scan continuously. That did it. No more popping. I'm pretty sure it was the McAfee.

That link you posted for the program didn't work, but in this case I didn't need it.

I've got another problem so bizarre that I'll start a new ticket for it.

Anyway, thanks again for those who read and commented. For those of us who aren't very adept at computers and all the software that goes into recording through a desktop workstation, this forum is great.

i used this to do the same thing you did..trace my pops and clicks..also go to control panel/device manager/networksettings,turn off your wireless.