I just got a new HP Pavilion notebook with Vista. The problem is when I try to watch videos on YouTube with Mozilla Firefox it says I have download the newest version of Adobe Flash. I download and it still says that I have to download the newest version. The thing is when I open Internet Explorer I can see videos on YouTube. Does anyone have any idea what is wrong and any solutions? Please help.

have you downloaded shockwave flash? Go through all the set up options in firefox, check that all the needed options are ticked.