Ok, so I just got my new 3g iphone, and did my due dilligence searches on iphone on the forums. I came up with this thread, and one mentioning turning off cambozola fixing things. Neither of my servers have cambazola, but I'm not getting any images.
Is there anything else I should check?
Interestingly, the bug where clicking a monitor doesn't show the event view isn't present on the iphone. [ZM 1.2.3, I click on a monitor in firefox and there's no events list. Click on one on the iphone, and there is. Just no image.

]
Edit, 5 minutes later: Mootools uses java, duh. Disabled that and all is well. Though I want mootools. It'd be nice if ZM could turn it on for everything but iPhones.