Most videos don't seem to be working!

[k.sjo]

When I was trying to watch Dragon Ball episode 88, from season 4, both source 1 and 2 didn't work. The subbed video did start playing, but I don't intend to watch the whole season subbed. I've had had this before.
As I try to watch an episode it says that the video was not found or access denied.
It's not just episode 88, but all the episodes in season 4 won't work. I checked other seasons as well and just a few in season 3 worked and season 5 didn't work either.
This I do find very strange, because the day before I could watch everything without any problems.

Can someone please check this out and fix this? This is the only good site I know to watch Dragon Ball (Z).