DVR - Delete saved program - Hangs the receiver box

Hi

Anytime I try to delete more than 2 programs from DVR, the system wants to Restart and does not allow to Delete. I have bunch of episodes that has to be deleted, when I delete it hangs and restarts. But even after reboot, it does the same thing.

Is there an alternative way to delete saved programs? Let me know if any details are needed.

PS:- Though i have filled only 55% of space, trying to tidy up the DVR.

Thank You,

Regards.