Update:

I think Star Wars suffers from the same bug in PowerDVD 11 affecting Avatar on Blu Ray, when playing any of the Star Wars movie discs, the first CPU core on a multi-core processor runs flat out. This is causing problems with playback - graphic distortion and some sound cut outs/player crashes.

Hopefully we'll see a fix soon?

PowerDVD full Version Full version 11 Ultra
PowerDVD SR Number DVD110811-05
PowerDVD TR Number TR110902-013
Operating System Windows 7 Home Premium
Do you use administrator or restricted user account? Administrator
Is your PowerDVD a Retail product or bundles with HW? Retail
Used VGA 1GB ATI Mobility 5400
Used VGA driver version 8.881
Used Audio device Onboard Realtek
Used Audio device driver version Latest
The Audio setting in PowerDVD and in OS (default devices) SP/DIF
Used ODD drive (full model name and Firmware Version) Hitachi + LG CT30N F/W A200
Used Display(s) 40" Samsung TV (1080p)
Which kind of display connection (HDMI/DisplayPort/VGA/DVI) HDMI
Whcih Display refresh rate do you use while Playback (24/25/50/60/120/...) color=darkred] 30Hz interlaced according to DXDiag - switched to 60hz to test if this is the fault[/color]
Are you using single or dual monitor environment Single
Are you using clone or extended mode (if use two display) N/a
(3D only) Please provide detail info about 3D setting in PowerDVD N/A
What kind of Antivirus SW are you using Microsoft Security Essentials
Which Internet Browser Software is installed Chrome/FF/IE9
Do you use virtual ODD (e.g Daemon Tools) No

I received my Star Wars Blu Ray box set super early (yay). Sadly, my Dell Zino 410 seems to be struggling to play them. It's a relatively new system, played a couple of blu rays with power dvd 11 and they were okay. I'm not sure if there's something new in the DRM used by the Star Wars BDs or what's going on but it's infuriating to say the least.

The discs will play but random artefacts appear on screen with no real pattern - sometimes you'll get a few lines of them, other times it will be the entire screen. I've tested the discs in my PS3 and they seemed to play okay. The screen corruption doesn't happen in the same place each time and doesn't happen every time - as I say some times it will play fine for 30 minutes, other times you'll see the artefacts every 5 minutes or so.

PC is not under any other load, no other applications are in use. RealVNC is installed but no remote sessions are active whilst playing. I've tried disabling the mirror driver which makes no difference.

Things I've done so far:

Upgraded PowerDVD 11 Ultra to the latest version (1/09)
Tried three different sets of ATI drivers
Disabled the VNC mirror driver
Turned off Hardware Acceleration in PowerDVD

I can't tell if PowerDVD is at fault, whether its my graphics card, RAM or whether its the drive. I ran memtest for 30 minutes and no errors were found, I need to run this overnight to allow it to do a few passes.

I played one of the extras on one of the accompanying BDs last night for over an hour and no artefacts were seen - the picture was 4:3 and not 1080p - it was more what I'd expect from DVD. I run the PC in 1920x1080, the TV supports this and I've watched 1080p mkv files and other 1080p blu rays without a problem.

Just noticed I'm running at 30hz, changed to 60hz to see if this fixes