I experienced a similar thing yesterday not long after installing Mac OS X 10.4.4 update and Safari Version 2.0.3 (417.8).

In my case it was when viewing a page of search results from Google and then when I linked on to the next page of results up came a similar message like you mentioned. It was not a pop up window but a Google page with the message that it had detected a virus and listied links to virus checkers and spyware programs. I did not investigate the web page at the time but it appeared to be a genuine Google page with their logo on it.

I have a feeling it may have something to do with the shareware program Pithlmet which informed me after the loading of the new version of Safari that the Pithelmet has not loaded as it is incompatible with this version of Safari. I have since removed Pithelmet and all associated files that were installed with the program.

Will be interesting to see if the message appears again.

Dave Watkins

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On 14/01/2006, at 8:23 AM, Mervyn & Giuliana Bond wrote:

Over the last 5 days or so, regardless of which browser I use, I have been getting a pop up menu saying I have a computer error and can have a free scan to correct the error. In trying to close the window it takes over my browser window and says to click OK to start the free download. There is a cancel option but after cancelling the offer reappears. I force quit out of the browser to clear the deck. Has anyone else experienced this irritation? What action to stop it?
Merv