There is many threads about this,and each time one of the mods or coords goes to see it,the image is fine. I believe it is just the connection to RR servers gets jumbled on a percentage of hits.I have never had this,but have seen the images screen capped and posted. My suggestion too would be to right click the image if it happens and go to the actual image url shown in the pop up menu you get... You could even try copying the image to your paint program to see if it is scrambled there if it really is an annoyance to you. Just suggestions.

"The happiness of a man in this life does not consist in the absence but in the mastery of his passions."