I have had my tivo for about 3 years, and lately it has been running really slowly. There is noticable delay (5+ seconds) between the time I hit the guide button and the guide actually appearing on the screen. This used to be pretty much instant for me. I also noticed that pausing doesn't always work on the first try. When I hit pause, it will pause for just a moment and the keep playing, when I hit it the second time it actually stays paused. Not sure what the problems is. I have tried to restart it thinking that it might need a reboot, but that didn't seem to help. Is there anything else that I can try?