576799 - Bizarre Iframe "file not found" error on going back in history

Status: RESOLVED DUPLICATE of bug 518081

(Firefox :: General, defect)

Description

[Chris Harrington]

User-Agent:       Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; en-US; rv:2.0b2pre) Gecko/20100703 Minefield/4.0b2pre
Build Identifier: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; en-US; rv:2.0b2pre) Gecko/20100703 Minefield/4.0b2pre

Firefox (or Minefield in this case) shows a strange "file not found" error on navigating backwards in history, as if trying to open a local resource in the iframe.

Reproducible: Always

Steps to Reproduce:
1. Go to reddit.com (haven't tried to reproduce it elsewhere)
2. Note the ad in the iframe on the right side of the page
3. Click virtually any link that will refresh the entire page (ie not "login"), then click back
Actual Results:  
Iframe displays a "file not found" error message

Expected Results:  
Previous content (or any non-error content, really) displays in iframe.

Also tested with Chrome, Safari, and Firefox 3.6; no bug.

Comment 1

[Chris Harrington]

Attachment: Screenshot

Notice the file that it claims cannot be found is a proper URL.

Comment 3

[Dietrich Ayala (:dietrich)]

dupe of a blocking- bug.