Hi there, I've had the San Francisco Symphony Mahler SACDs for about a year now. I've only listened to them probably 3 or 4 times, but I notied cracks on the symphony 3 and 6 dics. There seems to be one crack on each disc, starting at the center and going to the outside of the disc. The crack itself is only in the center clear part, before the actual disc. Has anyone else had this or similar problems with these discs? I've read on here before about problems with SACD cracks, but I can't seem to find the discussion now. I'm going to contact the SF Symphony store directly and see what they say also. Thanks for helping.