Just last night my Panasonic RP91 started pausing during playback. After a few mins of playing (5-20) it starts to pause for 5-10 secs then play for 20 secs, then pause. Sometimes it pauses and does not resume. Sometimes it pauses and then makes a bad noise. I just upgrades the firmware to 236 but it didn't help. Happens on three different disks. Any ideas?