No change takes effect

Sorry about my english, but I have not had any response writing in Spanish, so…

I have 3 wordpress webs in the same server. And I’m having problems with two of them. Lately, when I published a post, it does not appear until later, first one hour, now it seems that takes up to twelve hours. And the same if I made any change on the Theme, CSS, Menu and so on.

I suspect it has something to do with the super cache plugin I’ve already deactivated and deleted. I have also deleted the line of wp -config.php. But nothing happend.

The post are published, they appear in the database and if you surf using a category also appear. But not in the home page, here they appear hours later, which seems to take longer each day.

I don’t know what to do, how can I check if some cache is save? How stop it? As I say before, the third page in the same server don’t have the same problem, I didn’t install any cache plugin because is a very small blog, but the changes appear without any problem. I say that, because for that reason I know my server is not saving any cache…

Well, I hope I explained myself well enough and someone can help me. Thank you!