I've got two X-Fi Forte's (had to buy a replacement because of a broken connector), and recently both have started intermittently making a horrible crackling noise through the headphone output. Not sure if crackling is the right word for it - kind of a rhythmic crack, crack, crack kind of sound. I've troubleshot it as much as I can, tried both cards, tried all the PCIe slots, tried different headphones, but can't seem to pin it down. Anyone have anything similar? I've read some threads about driver problems, but it just started happening a few months ago (with the same drivers), and I've tried re-installing the older drivers to no effect - and last night while I was fooling with it it was making the noise as soon as the system completed POST, before it even booted into windows, so I'm thinking it may not be drivers. One of the cards was very hot, so I tried blowing a fan on it, but that didn't seem to help either. Maybe a BIOS setting?