I’ve just had Trojan “JS/Tivso.14a.gen Trojan” appear while signing in to check email in a hotmail account based in Thailand. NOD32 catches this Trojan as the banner Ad for a Thai bank opens at the top of the screen.

I’ve checked 4 other non Thailand linked hotmail accounts and no Trojans were found. I went back to the original account a number of times just to check and the trojan appears each time this one account banner opens.

You can safely ignore this one. Occasionally when a page has an error in the code it can be mistaken for embedded malware. If it's a site that you don't know, be wary. If it's Hotmail or Thaivisa you should be fine.

http://www.computerforums.org/showthread.php?t=57357

not much there but it seems similar to your problem - you might have to check your system thoroughly.

Thanks for the suggestions. It appears it was a glitch of some sort. The problem has now gone.