Keep getting THE PAGE ISN'T REDIRECTING PROPERLY only for AMAZON...no problelms getting to ANY other websites...help!?

I keep getting THE PAGE ISN'T REDIRECTING PROPERLY only when I try to go to AMAZON...no others sites are affected...I have (I think) properly checked to see if there was a problem with COOKIES...nothing seems to work...I have even refreshed FIREFOX. HELP!!!! I'm using a desktop (works perfectly) with WINDOWS XP.