I was at the local aquarium yesterday taking a few shots and noticed this issue in post. I only noticed the problem in my ISO 3200+ photos. About 3/8 across the frame from the left, there is a vertical line of pixels which aren't exposing properly. The issue is more prevalent in the lower end of the spectrum / underexposed areas and can been seen best above the eagle's head on the tree. This was shot was at ISO3200 in RAW and processed in LR. The camera was purchased from Adorama back in October 2009. Any guesstimates on what Canon would charge me to fix this or what actions I should take?