Internet explorer 6 sp2 can not visualize .png files !!!

hello guys, I have problems in viewing .png files in internet explorer 6 sp2.

For example when I try to download a file from rapidshare and I click on free and wait the seconds needed to load the .png imahe that show the letters/numbers that I should type in to download trhe file from rapidshare , the .png image in my internet explorer can NOT be seen . I see just a red X .
If I right click on this red X to get the link tointyng to the .png , and i copy paste this url




http://dl7.rapidshare.de/access1879607425.png

into firefox , it show the OCR number/letter correctly.

It is just a problem of my IE . I did NOT have this problem untill few days ago.

Can u help me please ??

thank u