Going through the threads this morning, I made my way to a new posting in a thread about 'Being unable to download from Nexus'
Every time I clicked to see what the latest post was about, a download starts for the file: download.htm.
I quickly deleted these files and went here to report it. No other threads I have come across behave like this and I'm concerned someone may have left some malware or kiddy-script behind.
Posting that URL in a new browser tab seems to take me to the thread so I am really not sure what is happening.