My belief is that this is not possible, but there are many extremely knowledgeable people participating on this list and I would like to know if it is in fact possible. I am running CentOS 5.3 (32 bit) fully updated. Browser is Mozilla Firefox v.3.0.7. I believe both times this happened, once yesterday and once today, I was surfing on the web site of my favorite singer/musical group; or in the forum, which is a highly restricted area. Today when it happened, I believe I was looking at a video coming from YouTube.com I contacted the webmaster, someone I communicate with frequently, thinking that something on one or more of his web pages is infected, but he wrote back, thinking that my box (dual boot MS Windows XP and CentOS on the same hard drive) is infected by this malware and that his web site is clean. Below is part of the description he sent me in an email. I have seen the pop ups, a request to install Install-2006-60.exe which I declined...., etc. Comes from <http://antispywarepcscanner.com> Is there any way the Firefox web browser could have been corrupted by this, while using CentOS Linux? TIA! Lanny 16.04.2009 | Malware Type: Browser Hijackers Malware Description: Antispywarepcscanner.com appears to be another web pimp of the hazardous fake anti-spyware tool called Personal Antivirus. Do not get flattered by the seemingly decent-looking and pleasant design of Antispywarepcscanner.com website; the fact that it pushes rogue anti-spyware automatically makes this domain a fraudulent one. Besides, Antispywarepcscanner.com may act as an obsessive browser-hijacker that redirects your web-surfing to its URL without the slightest hint of your approval. The forced diverts to Antispywarepcscanner.com are explainable by the fact that these redirections are preceded by the intrusion of Zlob trojans that obscurely trespass on your PC and forcedly modify browser settings. When you hit Antispywarepcscanner.com, you will see either the misleading advertising of Personal Antivirus scareware, or witness the deceptive online scan performed by the above-mentioned rogue utility. No matter what tricks the fraudsters prepared for you on Antispywarepcscanner.com, do not believe a single thing you see on that site. The advertising misinformation praising Personal Antivirus is totally deceptive and ought to be ignored. The worst thing about Antispywarepcscanner.com is that you will keep getting redirected there until you do something about the malicious activity of the corresponding hijacker on your computer. So, you first and the most reasonable step should be Antispywarepcscanner.com hijacker removal. After that, you are strongly recommended to check your system for additional malware with the aid of a trustworthy automatic removal tool