outsdr | Just upgraded a couple of components in the computer....

And now it seems to be making the occasional odd noise. One of those noises that is caught out of the corner of the ear, and by the time I've given the tower a sideways glance, it's gone.

I fear it is taunting me.

I think there's a wire occasionally brushing up against a fan, or one of the fans is failing, or something, but how will I ever figure this out if I can't get a good look at the sound it's making?