My replacement Cisco DVR box with about 320 gb of drive space had only 9 one hour HD programs pre-recorded yet the box showed that 98% of the drive was used. Just standard 1080i shows like Burn Notice and Falling Skies. I deleted 6 shows and rebooted the box. Then with only 3 shows on it it showed 38% used. Then as I watched, it dropped down to 7% used. I called TW and they had no answers. Has anyone else seen this problem? The real question, I really had lots of space left on the drive, but if it showed 98% used, would it still record new programs? Or start erasing what was on it first.