Ok so ever since I upgraded some of my sites to WP 3.5 recently, it looks like caching of specifically images and css files are screwed. To explain:
If I try to update an image, it keeps on showing the old version of the image even after clearing my browser cache. I'm on a Mac, and tried FF and Chrome and cleared cache for both of them, delivering same results. If I add a parameter to the image URL (to bust the cache) it loads the new image, but then if I remove the parameter it reverts back to the old version again. I did notive that cmd+shift+R does some kind of a refresh that forces the new images/changes to display, but any subsequent "normal" refreshes reverts back again.
Same thing happens with my CSS files as explained above for images.
I even installed and tried W3TC to add expires headers to my assets and do the caching there, but that didn't really fix anything.
Can anyone maybe just point me in the right direction to fix this?
Thanks in advance!