Hey Roxie!!
Let's see - a few things sound like they are wrong.
If you're not seeing any ads at all on our site, there's definitely a problem.
either you have something running on your computer that is blocking them or you have a browser problem. You should be seeing crafty and general ads at the top and bottom of both the forums and the galleries.
However, I hate to say it, but that cascade of windows opening means your computer is infected with adware/malware/spyware or a virus. :(
I use AVG - which is free and very good. I would download that and run a scan several times and see if it doesn't fix both problems.