Interesting! I had evaluated an msf file for a fellow 568.2 user and I loaded the file to my 568.2. The speaker levels were over the zero level in the configuation. I too had pops when using a toslink connection with version 2.5. My levels are all negative numbers and there are no pops at all.

I guess every setup is different with the new software. probably why it is a beta. For me it is the best ever release...I haven't had any crashes, freezes or pops/clicks with my setup.

The 598 on the other hand has had some problems that needed rebooting to solve.

Ron

HT: 568.2mm (Revelation One filter), 518x2, SB3, Bryston 7BSTx3, 8BST, Aerial 10T, CC3, SW12(Qty2) w/SVS AS-EQ1, MK Tripole x4. JVC RS1u, DVDO Duo, Oppo 103 w/Vanity103HD, Sony PS3, VIP 3D Theatre, Acer H5360. Logitech Ultimate Remote and Hub.