First of all, I wasn't trying to say that there is no problem. I'm just saying that new batteries helps. My roku (the original series, HD) also seemed to get slower as time wore on, and I just thought I would share what helped, but didn't cure the problem completely. As to Hulu, Hulu is a very buggy program, and once it starts acting up, it will bog down if you don't hit the home button right away, usually I'm forced to pull the power cord when hulu acts up.
Does it throw the rest of the box off? Haven't seen that, but I'm sure Hulu could cause the rest of the system to malfunction, given that it is the *ONLY* app that will continue partially functioning and ignore the home button once it gets screwy. All other apps are terminated by the Home button as soon as you hit it.
Screenshades: The first Screensaver for Roku2!
Musiclouds: The best free internet music, on your Roku!
Ouroborialis: Psychedelic Screensaver for Roku!