numbers of characters limited ?

hi,
was woundering if there was a limit to the number of characters FCKeditor can handle ?

i got a working FCKeditor, but when i add more text, then the db (php+mysql) is not updated

i used text and changed it to bigtext, but i'm sure the text i entered isnt more then 65535 characters...

so : maybe the limit is in FCKeditor ?