Images too large under iOS 3.2

I noticed that when I test my app on the iPad 3.2 software, my buttons on the keypad do not look correct, they are enlarged. When I test it on the 4.0 or above, everything looks great. Any suggestions of what is going on?

I'll be more than happy to post code, just don't know which part to post?

Keep in mind the buttons are not enlarged like this i开发者_运维知识库n 4.0 or above. Are there any programming difference between the two.

Also, all these buttons were created in interface builder.

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Are you using high resolution images for your buttons? Do the image names end in "...@2x"? The high-res image name convention was introduced with iOS 4 to support the retina display, and I doubt that iOS 3.2 makes any special provision for images named with th