Does anyone else see drop-outs when playing CDs on the spdif into their 1050?

I've noticed about one drop-out per disc, completely unrepeatable (i.e. back up the CD to a couple of seconds before where the skip occurred and let it play through again and no skip the second time around), and had chocked it up to vibrations from the subwoofer shaking the cd player just enough to cause it to skip. But, now this thread has got me thinking that there might be more to it.