I back up my ProTools audio and session files (Mac-based) with Retrospect (vs. 4.3) to a Sony DDS-3 Tape drive. For years I hardly had any execution errors, but now I get 25-30% of my files coming back with errors. Repeating the back-up a few times sometimes works, but sometimes after many repeated back-ups of the same data, there are still two or three files that don't get copied properly. I regularly clean the heads with the cleaning tape on schedule as prompted, and I have tried copying from different hard drives (firewire, Ultra-SCSI), all to no avail. It's getting a little scary. I'm guessing the heads on my drive are shot, but I can't ever get anything but a busy-signal at Sony, and Retrospect charges $40 per incident for support! Anyone had any experience with this? Just thought I'd check before plunking down eight or nine hundred for a new drive.