Power DVD - Really annoying problem

Ok so I have Power DVD to play DVDs on my PC, it’s my fav piece of DVD software, interface is awesome, keyboard shortcuts are all cool…

…until now, it’s started doing this SERIOUSLY annoying thing. Sometimes (actually most of the time) when I put in a DVD and it starts playing, the video window is black. The DVD is playing perfectly, the audio is on but it’s as if there’s a black box covering the video. If I resize the video screen it kinda flickers a bit and you can see the video behind it…

I restart my PC and it works fine, but I don’t wanna restart my PC every time I put a freaking DVD in it!

WTF IS IT DOING!

I thought it mite be iTunes 7 screwing around…my PC’s been going apeshat ever since I installed it…worst version of iTunes…EVER! It sucks so bad…

Help!