Anybody having speaker issues?

I first noticed a problem yesterday morning. My external speaker just was not working. I made sure all of the settings were correct, and I still couldnt get any sound. Then all of a sudden, I got a text message and heard the tone. So, I tried the iPod again, and well, it worked. Thought nothing else of it.

Well, my iPhone just lost its sound again. Tried restarting it, and even tried reloading it to see if it was a software issue. Anybody else having these issues?

 

Anyone?

Or anyone have any possible fixes? I think its a hardware issue and I do have a Genius Bar reservation appointment for tomorrow...but just wanna make sure first.