I have Pioneer 116 DVD. While using PowerDVD (tried with 3.0 and 4.0 with the same result), sound constantly clicking every few seconds. In some scenes this is very annoying and frequent and in some does not appear always. I tested several DVDs that works fine on other DVD-ROMs buthere "clicks" in audio occurs.

I does not have any other software player to test ...

PC is Intel 850 on VIA motherboard (MS7177CT). Audio and MP3 CDs plays well.

Could this be HW or SW problem ?