This is on S3 OLED. So I hadn't seen an S03 error in ages, even for a box that hadn't connected in months. I noticed yesterday my area got a guide update to enable the Comcast channel #s above 1000. This essentially increases your amount of channel guide data by 50% (we don't actually have more channels being broadcast, this is just an overlay of channel #s to make navigation more consistent in different markets) Now my S3 OLED is getting the S03 upon loading program data (last step of connecting to mothership). I am pretty sure the drive is fine. It was reimaged last week and disk diagnostics indicate no bad sectors. So I am very suspicious that the enabling of guide data for channel #s above 1000 is the root cause of the problem. It seemed like last time we got hit with this problem, there were hints that it was due to guide data size (directv and dish people saw the problem but usually not cable subscribers) Just posting this as something to look out for. I know a lot of people recently did the bolt upgrade and may be still in the process of moving shows over but might also have other units they intend to keep. If you are in an S03 situation, your unit won't download guide data successfully (it'll download but "loading info" will fail with S03 error), but will otherwise work. If you repeat guided setup, usually you will be stuck in an S03 loop and you can't access TiVo menus anymore because you are in the middle of the Setup process. I believe you can avoid the S03 loop issue by doing "clear program guide and todo list" but I also recall there was a less invasive way. It may have been switching to OTA then back to cable or it might have been clearing the thumbs up stuff.