Youtube videos won't play, player won't even show up, also 50% of images get corrupted half way through loading.

For awhile the videos would just stop and endlessly buffer, or skip to the end when they got to as far as they would load. This was frustrating but at least I could watch the videos, now nothing even shows up, just a black box where the player should be.

For images, I've constantly got shit like this happening http://i.imgur.com/MX6Uh.png

Any help would be appreciated