I've had my 722 for over 2 years and this error 318 problem started 2 months ago and pops up every week or so. When I scroll out on the guide to about 48 hours I get this prompt. "Program information on hard drive is outdated. Retrieve program information from Sat. now?". I've said yes several times and the retrieval process begins. I've also unplugged the unit for several minutes and rebooted. The 318 error continues to pop up every week or so.