Hi,
I just started using Zenphoto, and I'm having the same problem. I tried you suggestion, and it didn't help. Is there anything else that might be wrong? I find it rather frustrating that there isn't an automatic wordwrap on here... even when I try to insert manual html, it ignores my code and nothing changes.
http://outlandarmour.com/zenphoto/index.php?album=steampunk-creations&image=Captain-Dantes-5.jpg