Is there any way you can share the full code? I can't tell what is happening exactly from what you've posted.
This isnt an issue with jQuery or IE - instead, it is an issue with the PNG processing library you are using (supersleight) which is doing that.
It may actually be the method that supersleight is using to apply transparency to the PNGs in IE.
While they certinaly do work (most of the time), these methods are very bad for performance. Make sure you absolutely NEED transparent PNGs. There are often other ways of going about this, including using a separate style sheet for IE browsers that use Gifs or another image format.
I think it's the "Glossy" script I'm using. When I disable it for IE browsers, the bug doesn't appear anymore.
It's not jquery its IE. Its fked up as always. My site does it to im trying to find a fix to display the proper image size. My images show the perfect size in firefox but they also apear smaller in IE if i dont have expicit settings on image size. If anyone nows how to correct this it would be a great help thank you