I also have a weird problem when I watch DVD's through playstation...

When I actually play a game, I have my t.v's volume set to about 14.. When I go back to actual television, I usually have it set at about 24...
But when I watch movies on the playstation, I honestly have to put it up to about 70 or 80 to get it the same volume of normal television...

I've got no idea why it does that...