Images Not showing in IE

I was working for a client's website. Everything was working fine, when suddenly my client complained for images not showing.

I check the site in Firefox, Chrome, it was fine. Then I checked on Internet Explorer (IE). I was a nightmare. Images weren't showing in IE. Oh com'on. How come this is happening. I search google. Checked my html. Reviewed about doctype. Nothing to be of much help.

Then, i found a very simple advice: "Change the settings of your images from CMYK to RGB, and it will be sorted".

To my amazement, it worked. Woooohhh... How I hate IE...