Step 1. Choose Flickr upload.
Step 2. Paste https://www.flickr.com/photos/fun_flying/1313873195 in the field and load it.
Step 3. Press continue.
Step 4. Extend the desciption-field a little.
Step 5. Highlight "Boeing B-17G" in the decription field.
It should now have frozen your browser. (BEANS)
I use Firefox 34.0a1 (2014-07-29), I had 3 tabs open. 1 the Flickr-flie, 1 the upload-page, and one Flickr-search.
I am using a Windows 8.1
AMD E1-1200 APU with Radeon(tm) HD Graphics 1.40 GHz
RAM: 4,00 GM (3,59 GB available)
64-bit (x64-based processor)
Version: unspecified
Severity: normal
OS: Windows 8.1
Platform: PC
Whiteboard: aklapper-moreinfo
See Also:
https://bugzilla.wikimedia.org/show_bug.cgi?id=54994