white screen on Mac when screen sharing...

If you get a white screen when you using screen sharing.
Just try this: copied from http://www.artin.org/geekblog/2010/05/mac-screen-sharing-vnc-white-screen/

1. Open a new Finder window.
2. Click “Go” and then “Go to Folder” (or hit Command-Shift-G).
3. Type in “/System/Library/CoreServices” and hit enter.
4. Find the “Screen Sharing” application, click once to highlight.
5. Click “File” and then “Get Info” (or hit Command-I).
6. Find the checkbox labeled “Open in 32-bit mode” and check it.
7. Close the Info window and Finder folder window.

original: http://www.artin.org/geekblog/2010/05/mac-screen-sharing-vnc-white-screen/