First of all, many of you are clearly smoking crack. Eight relevant replies to the original poster and not one person mention that probably everyone here reboots their 522 once a day.
You see, E* has poor software writers and to make up for MEMORY LEAK problems with their 522 they have made the 522 to reboot every day at the "daily update" when you get the new guide. This is default unless you go and tell it not to "update" (reboot) every single day at 3am or whatever time you set.
To answer the original poster's question, I reboot the 522 at least twice a day. I have the daily update (REBOOT) turned off because it's annoying, so I manual reboot once a day when I feel like it to have a daily reboot and to get the new guide. And then I usually do another manual reboot about 12 hours away from that to keep things working right. I might also have to throw another manual reboot in there somewhere from time to time too, if the closed caption, caller ID, rewind, record, audio/video sync, or some other problems gets bad with the receiver.
CopyChief said:
Last time I did a reboot (for preventive reasons) I lost my timer schedule. Still had the timers but nothing was firing. So I'm hesitant to do it now, even after the 235 update. Hate to have to reprogram everything
CopyChief, yes this is a somewhat common problem. It can even happen to you at the 3am update without doing "preventive reboot" as you call it. When it happens that you reboot and the timers don't work right, just keep manual rebooting it one or two times in a row and they will start to work right again. You don't need to redo all of your timers. Sorry.