I've been getting a lot of error messages like "bad gateway" or "gateway timeout" lately. When it happens, I'm unable to access PF for a few minutes. But I can access other sites. Does anyone else have these problems or is it just me? I have also occassionally had a different, but possibly related, problem when I'm previewing my posts. I have to wait for my browser (FF6) to access some web site. Sometimes it's physicsforums.com, but usually it's something I've never heard of. I've seen lots of different URLs appear in the lower left corner. I assume that they are the URLs that advertisements are loaded from. The reason I say that it's possibly related is that the last time I had to wait for 10 seconds or so at each preview, after a while I got one of those annoying gateway messages instead.