A couple of weeks ago, I clicked on a message within Talk and immediately more than 20 windows opened up, all advertising. My computer continued to open random advertising pages and and an audible announcement telling me my security was at risk also began. I ran a malware scan and my computer had been infected with trojan horses and other malware. It took ages to sort, but I didnt really connect it to Mumsnet itself at the time.
Last night, I clicked on another Talk thread and exactly the same thing happened (my computer managed to block 29 windows from opening at once!). A malware scan tells me I had 7 trojan horses and multiple other infections. Is there an issue?