DVR Locking Up

Hi,

I recently have been having problems with my DVR box locking up. It only locks up when I am in the recorded shows section of my DVR. Originally I thought my problem was when I would delete a show that I already watched sometimes I would hit the exit or back button before the show was finished deleting from my DVR section. However, tonight I went to select a show that was already recorded from my drop down list and it locked up again. I have to completely reboot my box in order to gain control again. I have had to do this about 10 time is the last week. Has anyone else had this problem? It has only been going on for a week or two.

Thanks