Installing and upgrading help

Hey guys,

After i upgraded to the latest version, a notice occured in the index.php such as:

Notice: Undefined property: blockinfo in ...\index.php on line 63
Table  'moodle.mdl_blocks' doesnt exist
SELECT  * FROM  mdl_blocks WHERE visible='1'

And it doesnt load all the blocks as usual. As far as i know in mysql database there is a 'mdl_block' part not 'mdl_blocks'..
How can i fix the problem? and What is wrong with that?
Thx for helping from now.. Take it easy...