I've noticed problems with the volume control since I updated to Beta11 as well. the volume control doesn't seem as smooth as it was before. I get the fractions too.

My system is setup so that at 0db the amplifiers are just below clipping, as noted on an O-Scope, using IASCA Autosound 2000 320k MP3 files.. This typically means my 'Alone' listening level is mid -20db's, 'G/F in car' level is mid 30's. EQ is set flat for most MP3s. Anything greater than 20db results in me not being able to see out my mirrors and a nice back massage