relube what? I lube the chain as often as possible, I have to grease everything really well once or twice a year for me, replace the bearings in the axle carrier, and greast the swing-arm pivot joint, shock mounts, and a-arms, once a year.....
Once a year??!! Whatever floats your boat I guess.
Most people don't ride as hard or as often as we do, but we grease the shock mounts and that stuff every 3 or 4 months.On our race quads it's usually part of getting our quad ready for a race too.
As for lubing the chain I agree.As often as you can remember.