I've noticed several times in the last few days that my photos look terrible after editing and saving them with Picasa 3.9.0.
I think this happens when I do the following:
1 - edit a series of photos using Picasa 3.9.0
2 - click the Back to Library button
3 - click the Save button (floppy dick icon)
4 - later when I return to my photos, the editing steps (usually chopping, adjusting contrast and adjusting Saturation) I've taken for a photo seem to be repeatedly applied to the photo resulting in awful looking photos
5 - to get back to the properly edited photo, I need to click the Undo Tuning and Undo Saturation buttons until the photo looks proper