What security settings gives the attached message? I have not changed any thing in my firefox settings.
Hi…
If you go to “Tools” and then “Options” and click on “Security,” it’s the middle checkbox in the upper half of the window, “Tell me if the site I’m visiting is a suspected attack site.” 
Best Regards…
Thanx but the site I was visiting was http://www.amarujala.com/today/default.asp and not what popped up.
Hacked web sites often try to divert you to a malicious site. This may be what happened.
Infected systems could do this also.
This is true.
DrWeb/LinkScanner report the web site as fine, so check for malware on the computer which may be trying to divert to a malicious site, as YoKenny mentioned.
Here’s a choice of free scanners:
Ad-Aware Free
Spybot Search & Destroy
SUPERAntiSpyware Free
a-Squared Free
Malwarebytes’ Anti-Malware
Another possibility is that this site links to something unpleasant. It does link to 2 “unidentified” sites, although Siteadvisor says it’s OK.