CS3 Bridge: Preview image too small

Hi,

Here's what I'm using:

Photoshop CS3: 10.0.1

Bridge: 2.1.1.9

ACR: 4.6.0.30

No matter what mode I coose (lightbox, horizontal/vertical filmstrip ...), the preview image occupies a very small part of the preview pane and I find no way to resize it. The thumnail pane and the thumbnail images themselves are resizable all right.

I tried purging the cache and that didn't help.

Any help would be very much appreciated.

Thanks,

Prabal.