645317 - page-back and page-forward buttons inoperative [Caused by McAfee SiteAdvisor 3.3.1]

Status: RESOLVED DUPLICATE of bug 638657

(Plugins Graveyard :: McAfee AV, defect)

Description

[Paul OBrien]

User-Agent:       Mozilla/5.0 (Windows NT 5.1; rv:2.0) Gecko/20100101 Firefox/4.0
Build Identifier: Mozilla/5.0 (Windows NT 5.1; rv:2.0) Gecko/20100101 Firefox/4.0

Just installed Firefox 4.  The same problem occurs, both on this computer and on my Windows 7 system at work.  If I do to a site like Digg, Reddit, BBC, Huffpo, etc. I have no page forward or page back navigation -- arrows are gray, mouse button inoperative.  This bug first appeared on the last update to Firefox 3.

Reproducible: Always

Steps to Reproduce:
1.Go to Digg
2.Select item, go.
3.No way back.
Actual Results:  
No back or forward navigation after going to any page within a site like Digg, Reddit, CNN, any news site, etc. etc.

Expected Results:  
Before the Firefox update of a couple of weeks ago, I always had normal navigation.

Comment 1

[Paul OBrien]

The same problem occurs on a new Dell with Windows 7.

Comment 2

[Paul OBrien]

I have found the problem: McAfee SiteAdvisor 3.3.1 add-on.  Disable this and proper navigation is restored.

Comment 3

[Ed Morley [:emorley]]

Thanks for the follow up.

3.3.1 was supposed to fix a number of problems, so worrying that it doesn't...