I am using the NextGen gallery plugin and love the result. However, If I click on a photo to enlarge it WITHOUT scrolling slightly down the page, the photo will appear with my title bar links cutting right through the middle.
I have attached a link to my gallery (currently holding 1 photo only). The photo still works without a thumbnail, just give it a second to load.
You will notice when you scroll slightly down the page then click the thumbnail I don't have the problem.