I'm having problems with my logo at my website - www.sparkpcb.com. If you stay on the page for a while even without scrolling, the logo changes to a darker version I uploaded as a test version earlier. I've tried updating the logo many times through the Visual Editor, but that doesn't seem to help. Neither does clearing the cache or deleting the thumbnails folder.
Your help is appreciated!
I finally fixed it. I manually removed the logos from the images folder, and then cleared all the caches and thumbnails. Then I reuploaded the logo and it works fine now.
Thank you for sharing this information. Hope it will help someone