How can I tell if I've been hijacked/infected?
Something nasty happened. A web browser dialogue opened that seemed to imply some virus software was going to be downloaded. It had OK and cancel buttons, and I clicked cancel, but I think this was a trap. A new window opened. I quit Firefox immediately. I wasn't at all sure that damage was done. This morning I saw that the Console application had been opened (I never open it, so I am fairly certain it was associated with last night's event), and the following record was there of the event. (This link is safe, it just leads to a screenshot of the console readout.)
http://www.visitvenice.co.uk/Picture3.jpg
Can anyone advise me on whether I have anything to worry about, and if so, what I can do to put my mind at rest and/or get rid of the problem?
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This is the link that I originally clicked on - WARNING - DON'T FOLLOW THE LINK UNLESS YOU ARE COMPLETELY CONFIDENT YOUR COMPUTER IS RESILIENT AGAINST INFECTION AND VIRUSES!
http://nerfw.6te.net/clevelana9/casa-water-heater.html
ibook, Mac OS X (10.5.4)