Cant raed data DVDs

[john_rambo]

Hi,
Problem is while watching a movie (on the data disk) the DVD gets stalled. It again starts reading for some seconds & stalls again.

% dmesg |tail
(cd0:ata3:0:0:0): SCSI sense: UNIT ATTENTION asc:29,0 (Power on, reset, or bus device reset occurred)
(cd0:ata3:0:0:0): Retrying command (per sense data)
ugen0.2: <USB> at usbus0 (disconnected)
ukbd0: at uhub0, port 2, addr 2 (disconnected)
uhid0: at uhub0, port 2, addr 2 (disconnected)
ugen0.2: <USB> at usbus0
ukbd0: <USB USB Keykoard, class 0/0, rev 1.10/1.10, addr 2> on usbus0
kbd2 at ukbd0
uhid0: <USB USB Keykoard, class 0/0, rev 1.10/1.10, addr 2> on usbus0
pid 1925 (ibus-daemon), uid 1001: exited on signal 6