It happend to me at the beginning of the week as well. It was Really annoying as all the answers I was searching for on google led me to this site and its malware warning!
The best I could gather was that it was somehow related to code being put on the site that would allow loading of malware onto your computer. I gather that it can be fixed with updates and might be attached to the ads that appear on the site.
I didn't see any messages from the admins about this, I guess it was just quietly taken care of (I hope).
I like this site better than MacRummors because it has more indepth Q&A for IOS devs.
I would change my passwords just in case. I think it might do it soon.
I think the Admins are trying to patch it up each time it comes out. The malware warning has been on and off for a couple days with me.
It must have happened recently, because I don't think Google would put out a false alarm
on a website. Sites with bulletin boards can be exceptionally vulernable once an exploit gets out.
Hopefully, they fixed it, because I don't see any strange traffic when visiting this site.