No Dropdown when i hover over username??

Whenever i used to hover over my username it dropped down a box where i could easily get to my inbox. Now its not their and neither is the forum dropdown or any of them! how can i fix this?

I have FireFox idk what version im not computer savvy so i dont know alot of code. so how can i fix it? its really annoying

I'm having the same problem, but I'm using Chrome. Any ideas?

I have the same issue. I am also unable to play any videos on either firefox or chrome (I get the same error message about flash player 10 being required, even though it is installed for both browsers!). Everything works find on IE 9.