I slightly extended the discovermeteor tutorial and added an image to every post in post_item.html:
<img src="discover.png" height="40px" />
After putting discover.png in the public folder everything seems to work as expected. However if you open the detail page (click on 'discuss') and come back to the overview (click on 'microscope' in the header) the pictures or not loading anymore. It happens in Safari and Firefox, in Chrome it's still working as expected. I put the example on http://img-notloading-safari.meteor.com
I don't know if this has something to do with it, but I noticed, the 'waitOn' function of iron:router is called twice when the overview is loaded in the beginning, but only once when I come back form the detail view and the pictures are not loading.
Any hint would be highly appreciated.