I created a simple presentation. A single page with a bitmap for a background and two lines of green text. When the slideshow runs the bitmap is not displayed and the screen is white. The text is displayed but it appears irregular with strange spacing between letters and the font is distorted. I've included a screen shot taken from a tri-screen system (however the same results show on a single screen system) and the original presentation file. I have the same results on three 32bit windows xp machines and a brand new out of the box 64bit windows 7 machine.
Created attachment 59154 [details]
screen show demonstrating the problem
Created attachment 59155 [details]
original impress file
I just tested under 3.5.2RC1 and the problem persists. It also persists with hardware acceleration turned on or off.
Ok this is a dupe. I didn't realize that the hardware acceleration being mentioned was a setting in LO. I assumed it was the windows display settings hardware acceleration property. Now I see it is a similar LO setting in Tools -> Options -> View.
*** This bug has been marked as a duplicate of bug 46901 ***