Now running Drupal 4.7 RC1.

Recently another Drupal site, I work on, was released from the "Google-sandbox" and is now directly a PR5! Yea baby!

The views module has also some major updates...this module is really powerful. I strongly recommend it. The main guy that maintains it merlinofchaos is very active and does an excellent job.

Here is the only thing when upgrading I realized that my views table were not update to date, make sure your view_view table has these fields.
This will only apply to people that installed the new views module (for 4.7) around January/February 2006. If not create then by hand (I did):

view_view
page_empty longtext
page_empty_format int(4) NOT NULL
page_footer longtext
page_footer_format int(4) NOT NULL,

block_use_page_footer int(1),
block_footer longtext,
block_footer_format int(4) NOT NULL,
block_use_page_empty int(1),
block_empty longtext
block_empty_format int(4) NOT NULL

view_args_php longtext

Also make sure you have the table:
view_exposed_filter as follow:

db_query("CREATE TABLE if not exists {view_exposed_filter} (
vid int(10) unsigned NOT NULL default '0',
field varchar(255),
label varchar(255),
optional int(1),
is_default int(1),
operator int(1),
single int(1),
position int(2),
KEY (vid)
) TYPE=MyISAM /*!40100 DEFAULT CHARACTER SET utf8 */;");

Cheers,
Chris