I have SF 12 and it regularly hoses my audio. I'll have a bunch of files open and I'll discover that at some SF has put empy "holes" in a file (dead space). It does this to the underlying file, so it is not recoverable without a backup. Has anyone experienced this? Does it happen in SF13? In general, is 13 more stable than 12? I don't want to pay a large upgrade fee to find behaviors like this. I have been using SF forever, but I'm ready to switch.