Forum Url: http://newssbb.smfforfree3.com/index.php
We also have www.brawlersparadise.com too....

Ok two little problems here....

First up is the main reason why I'm here.... Our users are complaining of malware warnings when browsing the forums.... I've checked it out and it seems they come from somewhere called onlymusic.biz.... I don't really know how this all works to be honest.... Any help here would be cool....

The second reason is that we're having trouble with logins.... Logging in is no problem.... But even when you set it to keep you logged it.... You still get logged out.... At random.... Sometimes your fine until you close your browser and sometimes it'll last say ten minutes.... 

The first one is the one I wanna fix the most.... The second problem is no big deal....

Thanks in advance if you can help....

From what I hear it's Google Chrome and Norton Anti-Virus.... But users not using them have said they're fine.... It's only a few topics on our social board....

I'm not sure if it might be an ad or something.... Because it doesn't happen everytime for them.... Is that possible?

Well using Chrome to find out if it was true gave me only this url.... "onlymusic.biz"

Good to know.

Second part the issue is that you have two different urls which is why they are getting logged out.
What I do would park your .com address under the domain manager and make that your primary url that should fix your issue.