Not sure what's happening, but recently my voice call volume keeps getting set to zero. About 20 minutes ago I checked and call volume was set to zero again. I raised call volume to maximum, made a call and verified it was still at max. Then hung up and put the screen to sleep. Just checked and now it's back to zero volume again for call volume. I'm going to go wipe cache/dalvik cache next and see if that helps. Never seen an issue like this before. Haven't installed any new apps related to managing volume, and confirmed that none of my dock apps (car dock or charging dock) are messing w/any volume settings. Anyone else seeing this, or have any ideas? I've rebooted a couple times and the problem persists through reboots.