hi there,
i'm now sure how you're adding the images and links to your threads, but i did a test and it seemed to work fine.
here's how i did it.
if you click on the little button on the post WYSIWIG editor that looks like a picture (of a mountain with sun in upper right) a box will open, stick the link to the image in there, and click ok.
that'll insert the image. to add the URL link to the bigger image, click on the one youve just added, then click on the button that looks like a chain with a globe behind it. another popup will show, add the URL to the bigger image in the bottom box, leaving the upper part set to HTTP. then click ok.
hopefully that should resolve the problem
susie