Hi all- My drive-upgraded 540 series SA Tivo has a recurring issue where it stops remembering that it actually has a subscription at Tivo. If you go into the System Information screen, The Account Status line will say that the account is in good standing, and it will connect to the service and download data fine, but the "Service Level" line will be blank. After a restart, it's fine for a day or two. This Tivo had been running perfectly for about 18 months with the new drive in, so it's clearly not an issue with the upgrade. Any thoughts on how to fix this? I'd prefer not to do a "Clear and Delete", I've got more than a few recordings that I'd prefer not to lose. Thanks!