Two problems with my Snow Leopard! Help plz
 

Hello! so everything works fine now!
Exept these to things..:

Quick Time Player Doesnt show..

And the secons problem i got is:
After im on the internet for like 10 - 15 minutes all the networks get lost :S i dot know why.. But im on youtube and my net and all the others get lost :S I have to restart my computer all the time,,