I have a HR34 and lately it has been extremely slow to respond at times. I can push guide and it will take several seconds to bring up a blank guide, and then about 10-20 seconds later the guide will appear. Doesn't do it all the time. Directv equipment never has been as responsive as the dish equipment I have had in the past, but it is getting worse. Is there a fix for this? I have had it for 1 year and 11 months.