So when I (sometimes) click through to a link, Opera auto downloads something. It doesn't open and it always saves as "Download", when I click on "Get Info" on it in the Downloads folder it says it's a TextEdit document and all of them are 4KB. . So after 20 minutes of reading the news online and clicking through a bunch of links this happens - my downloads folder is flooded with Download, Download (1), Download (2), etc. It's so bizarre and I can't properly pin it on a particular website since I've had it happen with more than a few.

This is my version information -
Version: 41.0.2353.46 - Opera is up to date
System: Mac OS X 10.10.5 64-bit

I don't know if this is relevant but a few weeks ago I got the Level 3 browser hijack that I have since fixed by changing the DNS.